BOX TWENTY CONSULTING ENGINEERS LIMITED

What BOX TWENTY CONSULTING ENGINEERS LIMITED does

Box Twenty Consulting Engineers Limited is a privately-held UK building services consultancy headquartered in Bristol, founded in 2016 by Managing Director Paul Weston. The firm delivers Mechanical, Electrical, and Public Health (MEP) engineering design services, building physics analysis, Building Information Modelling (BIM), and building/condition survey work across construction projects from concept through to handover, with a specialisation in low carbon and sustainable building design. Its client base spans residential (including student, private and affordable housing), commercial office refurbishment, education (schools, universities, specialist facilities), heritage and listed building conversions, defence and blue-light estates, industrial and laboratory facilities, leisure and hospitality, and animal care. Notable projects include work for the MOD Shrivenham Defence Academy, University of Bristol, Wiltshire Council, Surrey & Sussex Police, Berkshire Fire & Rescue, Immediate Media, and Guide Dogs UK, with project values ranging from £125k to £50M.

The firm operates as a professional services consultancy using chartered engineers and BIM/CAD specialists, supported by a proprietary web-based mobile survey application called ToolBoxTwenty. Its underlying technology stack is centred on Revit, AutoCAD and Navisworks for 3D BIM coordination and clash detection, combined with SAP, SBEM, Part O and thermal modelling tools for energy and building physics analysis. The team includes CIBSE-certified Low Carbon Consultants and engineers with extensive sector experience, and the firm operates from a single Bristol office serving the South West, London and other UK regions.

Box Twenty monetises through professional consulting fees charged on a project-by-project basis across RIBA work stages, supplemented by client-side technical advisory services. The go-to-market is sales-led via direct relationships, competitive tendering, framework agreements, and referrals from a network of repeat architectural and developer partners including Alec French Architects, Nash Partnership, TP Bennett, MAP Architecture, Shu Architects, Urban Creation, Deeley Freed and Bankfoot APAM. Revenue is not publicly disclosed; based on a headcount of approximately 15-20, revenue is estimated in the £1M-£5M band.

Name

BOX TWENTY CONSULTING ENGINEERS LIMITED

Legal name

Box Twenty Consulting Engineers Limited

Website

https://boxtwenty.co.uk

Company type

Private

Founded year

2016

Operating status

Operating

Headcount range

11–50 employees

Ownership category

akta.pro rank

Product category

Building Services Engineering Consultancy

NAICS

Engineering Services (541330)

SIC

Services-Engineering Services (8711)

akta.pro primary industry

MEP (Mechanical, Electrical & Plumbing) Engineering Consulting (BPAHAIAE)

Keywords

• Building services consulting
• MEP engineering design
• Building physics assessment
• Low carbon design
• BIM coordination services

Headquarters

HQ city

Bristol

HQ country

United Kingdom

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B

Offering type

Services

Cost components

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

Revenue model

1. MEP Consultancy Services: Professional consulting fees for mechanical, electrical, and public health engineering design services across construction projects from concept to handover. Revenue generated through RIBA work stages on a project-by-project basis for clients including developers, architects, contractors, and end-users.
2. Technical Advisory Services: Client-side technical advisory role reviewing contractor proposals, inspecting installations, and providing ongoing monitoring throughout construction phases.

Go-to-market motion2 records

Distribution channels1 record

Marketing channels4 records

Core offering

Box Twenty Consulting Engineers provides Mechanical, Electrical, and Public Health (MEP) engineering design services for construction projects from concept through to handover, alongside building physics and energy strategy consulting, BIM/CAD coordination, building and condition surveys, and client-side technical advisory services. Their work emphasises low carbon, sustainable building design across residential, commercial, education, heritage, defence, industrial, laboratory, and animal care sectors.

Product overview

Box Twenty Consulting Engineers is a professional consulting firm, not a software product company. They provide MEP (Mechanical, Electrical, and Public Health) engineering consultancy services for building projects. Their services include design solutions from concept to handover, energy strategy development, sustainability consulting, building surveys, condition assessments, and technical advisory services. They specialize in low carbon building design across sectors including residential, commercial, education, heritage, industrial, laboratories, and animal care facilities. The firm's deliverables are engineering reports, design documentation, specifications, and construction monitoring services rather than software products or platforms.

Differentiator

Problem solved

Functional benefit

Products and services

• MEP Engineering Design
• Building Physics and Low Carbon Design
• BIM Coordination and 3D Revit Design
• Building and Condition Surveys
• Technical Advisory Services

Quantifiable outcome

• Carbon emissions reduced by 71% for YMCA Wimbledon development
• +2 more outcomes

Named customers11 records

Segments8 records

Ideal customer profiles5 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature3 records

Partnerships

Eleven partnerships are on record, tiered core and minor.

• Alec French ArchitectscoreImplementation/ SI/ Consulting PartnerLong-standing working relationship on multiple projects including Trinity Road residential development and other Bristol-based projects. Box Twenty provides MEP consultancy services as part of architectural project teams.
• Nash PartnershipcoreImplementation/ SI/ Consulting PartnerOngoing partnership on multiple projects including Courtlands, The Old Bakery, and Oxon Pavilion. Collaborative design development for energy strategies and M&E systems.
• TP BennettcoreImplementation/ SI/ Consulting PartnerPartnership on commercial redevelopment projects including 1210 Arlington Business Park and 1 Friary Temple Way. Full MEP consultancy services provided.
• MAP ArchitecturecoreImplementation/ SI/ Consulting PartnerCollaborative partnership on heritage and residential projects including Porchester Court (Grade II listed) and BFI Berkhampsted. Sensitive design approaches for listed buildings.
• Urban CreationcoreImplementation/ SI/ Consulting PartnerRepeat client relationship on multiple projects including Redmayne House, 10 Henry Street, 78 Park Street, and 37 Doughty Street. Focus on conversion and refurbishment work.
• Shu ArchitectscoreImplementation/ SI/ Consulting PartnerPartnership on heritage and specialist projects including Bristol Cathedral Cafe and 78 Park Street student accommodation. Collaborative approach to sensitive installations.
• SkanskaminorImplementation/ SI/ Consulting PartnerWorking relationship on Brunel Academy education project. Main contractor providing construction services with Box Twenty as MEP consultant.
• Bankfoot APAMcoreChannel Partner/ Reseller/ DistributorProperty asset management company engaging Box Twenty for MEP consultancy on commercial redevelopment projects including 1210 Arlington Business Park.
• Sanderson WeatherallminorChannel Partner/ Reseller/ DistributorChartered surveyors engaging Box Twenty for MEP consultancy on education projects including Oakfield Academy and The Island Project.
• Deeley FreedcoreChannel Partner/ Reseller/ DistributorRepeat client relationship on multiple projects including CTL Foodstore (Lidl), North Yate Nursery, and The Old Bakery student accommodation.
• MJD M&E ServicesminorChannel Partner/ Reseller/ DistributorM&E contractor engaged for peer review and design verification on Calne Leisure Centre and Bath Cats & Dogs Home projects.

Scale indicators3 records

Recent moves5 records

Expansion highlights4 records

Direct peers

• Pick Everard: UK multi-disciplinary engineering and design consultancy with established building services and sustainability practices. Comparable in serving public sector, education, and commercial clients with MEP-led design.
• Cundall: Multi-disciplinary engineering consultancy with a strong sustainability and building services focus. Competes with Box Twenty across commercial, education, and residential sectors, with similar BIM and low-carbon design capabilities.
• Skelly & Couch: London-based building services engineering consultancy specializing in MEP design, sustainability, and creative projects. Closely comparable to Box Twenty in service offering and selective-client approach, with a portfolio spanning cultural, residential, and commercial work.
• Max Fordham: UK-based building services engineering consultancy with deep sustainability and low-carbon design credentials. Highly comparable to Box Twenty in service offering (MEP, building physics, energy strategy) and ethos, though larger and London-headquartered.
• Hoare Lea: One of the UK's largest MEP engineering consultancies with strong sustainability and low-carbon design practices. Direct competitor for commercial, residential, and education projects across the UK, with comparable BREEAM and energy strategy expertise.
• Elementa Consulting: UK building services engineering consultancy with a strong sustainability and low-carbon focus. Directly competes with Box Twenty for sustainable MEP design across commercial, education, and residential projects.

Broad incumbents

• BDP (Building Design Partnership): Major international integrated design practice with full MEP, structural, and architectural services. Competes with Box Twenty on larger commercial and education projects where clients want a single multi-disciplinary design team.
• WSP: Global professional services firm with extensive UK building services and sustainability consulting. Competes with Box Twenty on larger commercial and infrastructure projects, with broader service portfolio and international reach.
• Sweco: European engineering consultancy with a growing UK building services and sustainability practice. Competes with Box Twenty on commercial and public sector projects, with broader geographic reach and multi-disciplinary capabilities.
• Arup: Global engineering consultancy with strong UK building services, sustainability, and low-carbon design practices. Overlaps with Box Twenty on commercial, education, and heritage projects, but offers a much broader multi-disciplinary platform.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks6 records

Key highlights6 records

Customer concentration

• Xx.com/_BoxTwenty
• LinkedInlinkedin.com/company/box-twenty

Revenue estimate

Valuation estimate

Number of profiles

Profiles4 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 BOX TWENTY CONSULTING ENGINEERS LIMITED