TGA Consulting Engineers

What TGA Consulting Engineers does

TGA Consulting Engineers LLP is a UK-based professional design and consultancy firm specialising in Building Services Engineering, Building Sciences, and Low Carbon Design. Founded in 1962 and headquartered in Newcastle upon Tyne, the firm operates four additional offices across Stockton-on-Tees, Leeds, Stevenage, and London. Core service lines include mechanical and electrical (M&E) engineering design, Building Performance analysis (dynamic thermal modelling using IES Virtual Environment, computational fluid dynamics, overheating assessments per CIBSE TM52/TM59), BIM Level 2 3D coordination in Revit, Specialist Lighting Design, BREEAM consultancy, and low/zero carbon strategy. The firm holds ISO 9001:2015 and ISO 14001 certifications alongside CIBSE Low Carbon Consultant, BREEAM Assessor, Passive House, and Fitwel credentials.

The firm operates as a wholly owned private limited liability partnership led by three Directors (Scott Graham, Stephen J Olley, Jason Jobes) who are actively engaged on individual project delivery. Customer segments are concentrated in the UK public sector — NHS Trusts (North Tees, Royal Victoria Infirmary, Sunderland Royal, Monkwearmouth), universities (Durham, Newcastle, UCL, New College Durham), local authorities (Newcastle City Council, Durham County Council, Sunderland City Council), and heritage/cultural bodies (British Museum, Auckland Castle Trust, Historic Environment Scotland, Durham Miners' Association). Industrial clients include Hitachi Rail, SSEN/Siemens-BAM JV, and Merchant Place Developments. A 25+ year relationship with the British Museum spanning 250+ projects and a UCL framework agreement held since 2004 evidence high client retention.

Revenue is generated through bespoke project commissions ranging from feasibility studies to multi-million-pound schemes, delivered via traditional architect-led design team appointments, design-and-build contractor engagements (Sir Robert McAlpine, Willmott Dixon, Robertson, Bowmer + Kirkland), and public sector framework routes (Scape Framework). Pricing is not publicly disclosed; the firm has not raised external funding and operates as a privately-held partnership with no institutional or PE ownership.

Name

TGA Consulting Engineers

Legal name

TGA Consulting Engineers LLP

Website

https://tgace.co.uk

Company type

Private

Founded year

1962

Operating status

Operating

Headcount range

11–50 employees

Short description

TGA Consulting Engineers LLP is a UK-based building services engineering consultancy (founded 1962, 5 offices) delivering M&E design, BIM Level 2 coordination, building performance analysis, specialist lighting, and BREEAM consultancy to NHS Trusts, universities, heritage bodies, and industrial clients across the UK.

Ownership category

akta.pro rank

Product category

Building Services Engineering Consultancy

NAICS

Engineering Services (54133)

SIC

Services-Engineering Services (8711)

akta.pro primary industry

Construction Engineering & Constructability Consulting (BPAHAIAN)

akta.pro secondary industry

Engineering design services (line design, substation design, civil/structural) (EUADAKAG)

Keywords

• Building services engineering
• Mechanical electrical consultancy
• Building performance analysis
• Heritage building design
• Specialist lighting design

Headquarters

HQ city

Durham

HQ country

United Kingdom

HQ region

Europe

Offices5 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Operations, Technology or R&D, Marketing or Sales, Infrastructure

Revenue model

1. Professional Design and Consultancy Services: TGA earns fees by providing professional mechanical, electrical, and building performance engineering consultancy services. Revenue is generated through project-based commissions ranging from small feasibility studies to large multi-million-pound schemes, delivered via traditional design-team appointments and design-and-build routes. Services span concept through to construction supervision and handover.

Go-to-market motion2 records

Distribution channels4 records

Marketing channels5 records

Core offering

TGA Consulting Engineers is a UK-based professional design and consultancy practice providing mechanical and electrical (M&E) building services engineering, building performance analysis, Building Information Modelling (BIM Level 2), specialist lighting design, and low-carbon design services. The firm delivers concept-to-handover engineering consultancy for healthcare, education, heritage, museum, industrial, and commercial building projects, including HTM-compliant hospital MEP design, conservation-grade heritage engineering, BREEAM consultancy, and dynamic thermal/energy modelling.

Product overview

TGA Consulting Engineers is a professional design and consultancy practice offering an integrated portfolio of building services engineering services. The core offerings include Building Services Engineering (mechanical and electrical design), Building Performance analysis, Building Information Modelling (BIM), Specialist Lighting Design, and Low Carbon Design. Additional services include BREEAM consultancy and compliance/expert witness support. The company serves diverse sectors including healthcare, education, historic buildings, museums and galleries, commercial offices, retail, leisure, residential, and industrial developments, delivering both new build and refurbishment projects.

Differentiator

Problem solved

Functional benefit

Products and services

• Building Services Engineering Mechanical and electrical engineering design services including HVAC design, domestic services and plumbing design, electrical engineering, IT systems design, intelligent buildings and automatic controls, and lifts (vertical transportation) for new build and refurbishment projects.
• Building Performance Analysis In-house building performance consultancy (TGA|BP) providing dynamic thermal modelling using IES Virtual Environment, computational fluid dynamics (CFD), overheating assessments (CIBSE TM52/TM59), Part L compliance checking, and energy efficiency studies to inform early design decisions and minimise carbon emissions.
• Building Information Modelling (BIM) BIM Level 2 services including Revit-based 3D modelling, clash detection, 4D scheduling, and multi-disciplinary MEP coordination to enable design visualisation and project delivery across complex building projects.
• Specialist Lighting Design Specialist lighting design for museums, galleries, heritage buildings, retail spaces, public realm, and ecclesiastical projects, including heritage-sensitive installations, Casambi Bluetooth wireless control systems, LG2-compliant healthcare lighting, dark-sky-compliant public realm lighting, and decorative/functional lighting schemes.
• Low Carbon Design Low and zero carbon strategy and design services including passive building design, air source heat pump systems, ground source heat pumps (GSHP), photovoltaic installations, open/closed loop GSHP schemes, and decarbonisation consultancy for new build and retrofit projects.
• BREEAM Consultancy BREEAM sustainability assessment and consultancy services from Design Stage through to Post-Construction, supporting clients to achieve sustainability ratings such as BREEAM Excellent and BREEAM Very Good on commercial, healthcare, education, and heritage developments.
• Compliance and Expert Witness Regulatory compliance services and expert witness support for building services engineering matters, including independent certifier duties and quality assurance for property developments.

Quantifiable outcome

• Durham Cathedral Open Treasure: achieved RIBA National Award 2018, RIBA North East Building of the Year 2018, Civic Trust Award 2019, through energy-efficient environmental control systems that minimise energy use while protecting artefacts
• +5 more outcomes

Named customers20 records

Segments6 records

Ideal customer profiles6 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature4 records

Partnerships

48 partnerships are on record, tiered core, secondary and minor.

• Purcell ArchitectscoreStrategic or Co-development PartnerTGA works as part of multidisciplinary design teams led by Purcell Architects on multiple high-profile heritage and museum projects including Sunderland Museum and Winter Gardens (£8m), Auckland Castle and Tower, Ledston Hall, Salford Cathedral Reordering, and Holy Trinity Church (17Nineteen). This long-standing relationship spans over a decade and has produced multiple RIBA National Award-winning projects.
• Faulkner Brown ArchitectscoreStrategic or Co-development PartnerTGA has a multidisciplinary appointment as part of a design team led by Faulkner Brown Architects on the Grainger Market project (£9m, 2026) — Newcastle's oldest retail asset (Grade I listed, opened 1835). TGA provides Specialist Lighting and M&E engineering services within this architect-led team.
• P+HS ArchitectscoreStrategic or Co-development PartnerTGA worked as part of the design team alongside P+HS Architects on the North Tees Hospital Emergency Assessment Unit Refurbishment (£2m, 2025). P+HS led the architectural design while TGA provided full M&E engineering services including HTM-compliant AHU systems in a live hospital environment.
• Ryder ArchitecturecoreStrategic or Co-development PartnerTGA worked with Ryder Architecture on Monkwearmouth Hospital, providing M&E design and BREEAM Design Stage Assessment targeting Excellent. Also worked with Ryder on Durham Constabulary New Custody Suite (Constructing Excellence Award 2024) and Newcastle Hospitals NHS Trust projects.
• Howarth Litchfield PartnerssecondaryStrategic or Co-development PartnerTGA collaborated with Howarth Litchfield Partners on the Durham Castle Fellows Garden project (£600k). Howarth Litchfield led the architecture while TGA provided Specialist Lighting design and LV infrastructure for events, working closely with the University and landscape designers Colour.
• Sir Robert McAlpinecoreImplementation/ SI/ Consulting PartnerTGA works as M&E design consultant on projects delivered by Sir Robert McAlpine (main contractor). Notable collaborations include Monkwearmouth Hospital and Newcastle University Learning and Teaching Centre projects. TGA has been praised for proactive clash detection and collaborative working with the contractor and wider design team.
• Willmott Dixon ConstructioncoreImplementation/ SI/ Consulting PartnerTGA is engaged by Willmott Dixon on multiple projects including the Scape Framework Department for Education offices in Darlington, Darlington Gateway Station, and the Newcastle University Frederick Douglas Centre. TGA provides MEP design and BIM coordination within Willmott Dixon's construction delivery.
• Esh ConstructioncoreImplementation/ SI/ Consulting PartnerTGA provides MEP design on projects delivered by Esh Construction, including New College Durham T.H.E Hub (£8.9m) and New College Durham Promotion House. TGA collaborated with Esh and the full design team including Turner & Townsend, Ryder Architecture, and Gemini M&E.
• Robertson Construction EnglandcoreImplementation/ SI/ Consulting PartnerTGA is engaged by Robertson Construction England as M&E design consultant on the RVI Urgent Treatment Centre (Newcastle) and Port of Tyne (£4.2m) projects. TGA designs complex MEP systems in live operational environments for Robertson's construction delivery.
• Turner & TownsendsecondaryImplementation/ SI/ Consulting PartnerTurner & Townsend is part of the project team alongside TGA on the New College Durham T.H.E Hub (£8.9m) project. Turner & Townsend provides project management and cost management services.
• Gardiner & TheobaldsecondaryImplementation/ SI/ Consulting PartnerGardiner & Theobald is part of the project team alongside TGA on the Durham University Chemistry Refurbishment (£35m) project. Gardiner & Theobald provides cost management and project management services.
• Space ArchitectssecondaryStrategic or Co-development PartnerSpace Architects leads the design team alongside TGA on the Durham University Chemistry Refurbishment (£35m) project. Also worked with Space Architects on Callerton Academy (DfE new build secondary school).
• Gemini Mechanical, Electrical & Energy ServicessecondaryImplementation/ SI/ Consulting PartnerGemini M&E is the installation contractor working alongside TGA on New College Durham T.H.E Hub (£8.9m). TGA provides MEP design and performance support while Gemini delivers the installation on this complex T Level teaching facilities project.
• Jasper Kerr Consulting EngineerssecondaryStrategic or Co-development PartnerJasper Kerr Consulting Engineers is part of the project team alongside TGA on the New College Durham T.H.E Hub (£8.9m). TGA and Jasper Kerr collaborate within the multidisciplinary design team on this major further education development.
• Robertson Engineering ServicessecondaryImplementation/ SI/ Consulting PartnerRobertson Engineering Services works alongside TGA on the Port of Tyne project (£4.2m), with TGA providing design through RIBA Stage 3 and Robertson Engineering Services delivering Stage 4 technical design.
• BGP Structural EngineerssecondaryStrategic or Co-development PartnerBGP Structural Engineers is part of the project team alongside TGA on the North Tees Hospital EAU Refurbishment (£2m, 2025). TGA collaborates with BGP on structural coordination for M&E service integration in the live hospital environment.
• Driver Project ServicesminorImplementation/ SI/ Consulting PartnerDriver Project Services is part of the North Tees Hospital EAU Refurbishment project team alongside TGA, providing project management and programme management services.
• Richmond Safety ServicesminorImplementation/ SI/ Consulting PartnerRichmond Safety Services is part of the North Tees Hospital EAU Refurbishment project team alongside TGA, providing safety and compliance consultancy services.
• NTH Solutions Design and Development TeamsecondaryImplementation/ SI/ Consulting PartnerNTH Solutions Design and Development Team delivered the North Tees Hospital EAU Refurbishment (£2m), with TGA providing M&E design support throughout the construction phase.
• Equity ReleaseminorImplementation/ SI/ Consulting PartnerGeoffrey Robinson delivered the North Tees Hospital EAU Refurbishment, working alongside TGA's M&E design throughout the construction and handover phases.
• Siemens and BAM Joint VenturecoreImplementation/ SI/ Consulting PartnerTGA provides building services design for the Siemens and BAM JV delivering the £900m Orkney-Caithness 220kV Subsea Link substations. TGA designs HVAC and electrical systems for equipment halls and control buildings designed to operate for a 50-year lifecycle in a challenging marine environment.
• Equans (previously Engie)coreImplementation/ SI/ Consulting PartnerTGA supports Equans (formerly Engie) alongside Newcastle City Council on the £16m Public Sector Decarbonisation Scheme. TGA's in-house Building Performance team (TGA|BP) provides thermal modelling, dynamic simulations, and carbon reduction strategies for multiple buildings across the city.
• Renewable Energy AlliancesecondaryImplementation/ SI/ Consulting PartnerTGA was commissioned by the Renewable Energy Alliance as Building Services Consulting Engineers for the Morcambe Bay Academy Ground Source Heating project — replacement of an existing heating system within a 1930s secondary school using ground source heat pump technology.
• Argon Property Development SolutionssecondaryImplementation/ SI/ Consulting PartnerArgon Property Development Solutions is the client for Monkwearmouth Hospital, with TGA providing M&E design and BREEAM assessment services on this NHS staff hub project.
• Donald Insall AssociatescoreStrategic or Co-development PartnerTGA is engaged by Raby Estate as part of a team led by Donald Insall Associates on the Raby Rising project — major renovation of buildings within Castle Park and Gardens. Also involved in Raby Castle's Plotters' Forest Adventure Playground (specialist lighting) and Round House welcome centre.
• Sutton Vane AssociatessecondaryStrategic or Co-development PartnerTGA worked with Sutton Vane Associates to provide detailed electrical integration design for the York Minster Revealed project — new LED lighting installations in the nave, aisles, and transepts of York Minster. TGA integrated lighting proposals into the electrical installation and cable routing.
• Southern Green Landscape ArchitectssecondaryStrategic or Co-development PartnerTGA is appointed alongside Southern Green Landscape Architects on the Redcar Town Deal public realm project, providing M&E and Specialist Lighting consultancy to upgrade and improve the pedestrianised High Street for multi-purpose events.
• LDA DesignsecondaryStrategic or Co-development PartnerTGA's Specialist Lighting team is engaged as part of a design team led by LDA Design on Hull City Council's city centre improvement programme (£3 key streets), providing specialist lighting components for the Maritime Trail connecting heritage sites.
• Highbridge Property / North Tyneside CouncilminorImplementation/ SI/ Consulting PartnerTGA was employed by Highbridge Property and North Tyneside Council to assist Copro with Independent Certifier duties for two properties at Cobalt Business Park. TGA provides quality assurance and compliance verification as an independent certifier.
• Bailey Building ServicescoreImplementation/ SI/ Consulting PartnerTGA has an established relationship with Bailey Building Services, providing MEP design on multiple office developments including Park Royal (£15m, 20,000m²), Maxim Park offices (6,500m² Cat A fitout), and Hammersmith business park. TGA produces performance specifications and design information for Bailey's design-and-build delivery.
• Vistry Partnerships North EastsecondaryImplementation/ SI/ Consulting PartnerTGA works with Vistry Partnerships on the £55m Kirkleatham housing development scheme, providing MEP design for 75 homes designed for residents with support needs (adults over 55, accessibility requirements, learning disabilities).
• JDDK ArchitectssecondaryStrategic or Co-development PartnerTGA works with JDDK Architects as part of the team for Vistry Partnerships' Kirkleatham housing development (£55m). JDDK leads the architectural design while TGA provides MEP and sustainability engineering for this supported housing scheme.
• Be First Housing (Barking & Dagenham)secondaryImplementation/ SI/ Consulting PartnerTGA is employed by Be First Housing to develop RIBA Stage 3 design for the Roxwell and Oxlow Regeneration (£40m), delivering 140 affordable new homes with ASHP thermal energy and photovoltaic arrays across two estates in Barking and Dagenham.
• HCA (Homes and Communities Agency)secondaryImplementation/ SI/ Consulting PartnerTGA is involved in estate regeneration projects for the London Borough of Camden under an HCA Joint Venture framework. Projects include Regents Park Estate (£42m, 8 sites) and Bourne Estate (£22m, Grade 2 listed blocks). TGA acts as Technical Assessor.
• Alliance Leisure LtdsecondaryImplementation/ SI/ Consulting PartnerTGA provides mechanical and electrical services for the Bishop Auckland Leisure Centre (£23m new build two-storey leisure centre) being delivered by Alliance Leisure. The project includes main pool, learner pool, fitness suite, studios, library, and café with ASHP plant and PV arrays.
• Bradda CapitalsecondaryImplementation/ SI/ Consulting PartnerBradda Capital is the client for the 31 Chertsey Street refurbishment (£29,345 sq ft office in Guildford). TGA provides MEP design services and BREEAM consultancy, targeting an Excellent rating through VRF system, LED lighting, and 211m² photovoltaic array.
• GT3 ArchitectssecondaryStrategic or Co-development PartnerTGA worked with GT3 Architects on Oakwell House (£900k), a refurbished two-storey office redeveloped as headquarters for South Yorkshire Pension Authority. TGA's Specialist Lighting team provided a vibrant post-Covid workplace lighting scheme working closely with GT3's interior design.
• Aura (Grainger Market client)secondaryImplementation/ SI/ Consulting PartnerAura is the client for the Grainger Market project (£9m, 2026). TGA has a multidisciplinary appointment providing Specialist Lighting and M&E engineering for this Grade I listed market in Newcastle.
• Merchant Place DevelopmentssecondaryImplementation/ SI/ Consulting PartnerTGA was employed by Merchant Place Developments under performance duties for Tronic Subsea Excellence (£10.5m, 45,000m² industrial facility in Ulverston), with Eric Wright Construction as main contractor and Watsons Building Services undertaking design and build based on TGA performance specifications.
• Auckland Castle TrustcoreImplementation/ SI/ Consulting PartnerTGA was commissioned by Auckland Castle Trust as building services consulting engineers for the £14m Auckland Castle and Tower refurbishment, working as part of an architect-led professional design team led by Purcell Architects. The project won RIBA National Award 2024 and multiple RIBA North East Awards.
• The Wheler FoundationcoreImplementation/ SI/ Consulting PartnerTGA was commissioned by The Wheler Foundation for Ledston Hall and Ledston Chapel (Grade I listed country house with 12th century chapel, 3,000+ acres). Ledston Hall won Refurbishment and Renovation of the Year (Insider Property Awards 2023) and RICS Heritage Award 2024.
• Raby EstatecoreImplementation/ SI/ Consulting PartnerTGA is engaged by Raby Estate on multiple projects: Raby Rising (major renovation within Castle Park), The Plotters' Forest Adventure Playground (specialist lighting), and Round House welcome centre. TGA works as part of teams led by Donald Insall Associates and landscape designers.
• Royal Horticultural Society (RHS)secondaryImplementation/ SI/ Consulting PartnerRHS commissioned TGA to undertake energy studies at three sites: RHS Garden Wisley (Surrey), RHS Garden Hyde Hall (Essex), and RHS Vincent Square (London Head Office). TGA's Building Performance team analyses energy use across these diverse RHS estate locations.
• Durham Miners' AssociationcoreImplementation/ SI/ Consulting PartnerTGA was commissioned by the Durham Miners' Association as Building Services Consulting Engineers on the £7.6m remodelling and refurbishment of Grade II listed Durham Miners' Hall (Redhills). NHLF-funded project incorporating GSHP, underfloor heating, and specialist lighting within the historic Pitman's Parliament.
• Diocese of SalfordsecondaryImplementation/ SI/ Consulting PartnerTGA was commissioned by the Diocese of Salford for the Reordering of Salford Cathedral, working with Purcell Architects. TGA designs underfloor heating (low-temperature, ground source heat pump), LED lighting, and building engineering services while preserving the cathedral's ecclesiastical ambience.
• Thirteen Group / Hudson QuayminorImplementation/ SI/ Consulting PartnerTGA designed the lighting installations for Thirteen Group's head office at Hudson Quay, working as part of a design team led by Identity Consult to provide a complete project package merging multiple offices into one managed facility.
• Fusion LifestylesecondaryImplementation/ SI/ Consulting PartnerTGA is appointed by Fusion Lifestyle for Newcastle City Baths refurbishment — a 1928 Grade II Listed structure requiring M&E design, specialist pool and water treatment, and Turkish baths and spa services. TGA designs services to decouple the baths from City Hall and enable reopening.
• Identity ConsultminorImplementation/ SI/ Consulting PartnerTGA worked with Identity Consult as part of the design team for Redcar Town Survey, providing Specialist Lighting and M&E elements alongside Southern Green for the reordering of Redcar Town Centre on behalf of Redcar and Cleveland Council.

Scale indicators6 records

Recent moves6 records

Expansion highlights6 records

Broad incumbents

• Hydrock (now Stantec): Hydrock, now part of Stantec, is a UK engineering consultancy with MEP, building performance, and sustainability capabilities; competes with TGA on commercial, healthcare, and public-sector schemes and was itself a target of a major sector consolidation move.
• Arup: Arup is a global multidisciplinary engineering firm with substantial building services, heritage, and decarbonisation practices; frequently engaged on the same museums, universities, and NHS schemes as TGA, but with vastly greater resource and international reach.
• WSP: WSP is a global professional services consultancy offering building services engineering, sustainability, and project management; competes with TGA on public-sector frameworks (NHS, local authorities, universities) and large industrial projects like substations.
• Buro Happold: Buro Happold is a large international engineering consultancy with a building services division covering MEP, lighting, sustainability, and BIM — it competes with TGA on major heritage, museum, and education projects but operates at a much larger scale and global footprint.
• AtkinsRéalis: AtkinsRéalis (formerly Atkins) is a large engineering consultancy with strong UK building services and infrastructure practices, frequently shortlisted for NHS, university, and heritage public-sector work alongside TGA.
• Mott MacDonald: Mott MacDonald is a global engineering, management, and development consultancy with a strong UK building services and heritage practice; active on NHS, education, and transport infrastructure projects that overlap with TGA's portfolio.

Direct peers

• Hoare Lea: Hoare Lea is the UK's largest independent building services engineering consultancy, offering MEP, sustainability, lighting, and acoustics design across heritage, healthcare, education, and commercial sectors — directly comparable to TGA's service mix but at significantly greater scale.
• BDP (Building Design Partnership): BDP is an integrated architecture and engineering practice combining building services design with architectural leadership; competes with TGA on healthcare, education, and heritage commissions and offers a similar multi-disciplinary delivery model.
• Cundall: Cundall is a UK-headquartered multi-disciplinary engineering consultancy with strong building services, sustainability, and BIM offerings; comparable to TGA in the heritage, education, and healthcare markets and frequently competes on similar framework appointments.
• Max Fordham: Max Fordham is an independent UK MEP engineering consultancy known for low-carbon and building performance focus, with a strong heritage and cultural-sector portfolio that directly overlaps with TGA's specialist positioning.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks5 records

Key highlights6 records

Customer concentration

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Compliance8 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles3 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about TGA Consulting Engineers