What Gratte Brothers does

Gratte Brothers Group Limited is a family-owned UK building services company founded in 1946 by Derrick and Andre Gratte and now led by a third generation of the founding family. Headquartered in London at 2 Regent's Wharf with seven regional offices across the UK and operations in Ireland, the Group operates through six wholly-owned subsidiaries covering mechanical and electrical engineering, building services maintenance, security systems, commercial foodservice equipment, technical design, and customised security software.

The company's service portfolio spans MEP design, installation and commissioning; off-site prefabricated M&E modular solutions produced at two dedicated facilities; planned and reactive building maintenance; electronic security systems (CCTV, access control, body-worn cameras, perimeter and intercom systems) including proprietary software; and commercial kitchen design, supply, installation, and maintenance. The technical backbone rests on in-house design coordination using 3D modelling and clash detection, ISO 9001/14001/45001-certified management systems, and SSQS-101-accredited security operations.

Revenue is generated through a project-based, quote-driven model targeting enterprise clients via direct sales and dedicated account management, with additional access to public sector work through the Pagabo Small Works DPS framework. The revenue mix combines professional services (M&E engineering, foodservice installation), managed services (building maintenance, 24/7/365 security maintenance), and hardware sales (prefabricated modules, catering equipment). Marquee engagements include a £35 million supermarket security upgrade covering 40,000 CCTV cameras, the multi-phase 16MW Kao Data KLON-06 data centre build, and a three-year CBRE-led security upgrade programme across four UK data centre sites.

Name

Gratte Brothers

Legal name

Gratte Brothers Group Limited

Website

https://gratte.com

Company type

Private

Founded year

1946

Operating status

Operating

Headcount range

501–1,000 employees

Short description

Family-owned UK building services group (founded 1946) delivering mechanical and electrical engineering, prefabricated modular solutions, building maintenance, security systems, and foodservice design to enterprise clients across data centres, hospitality, commercial real estate, retail, and the public sector in the UK and Ireland.

Ownership category

akta.pro rank

Product category

Building Services

NAICS

Commercial and Institutional Building Construction (236220)

SIC

Electronic & Other Electrical Equipment (No Computer Equip) (3600)

akta.pro primary industry

Plumbing Supports, Hangers & Seismic Bracing (IMADALAH)

Keywords

• Mechanical electrical engineering
• Building maintenance services
• Security systems installation
• Commercial kitchen design
• Prefabricated modular construction

Headquarters

HQ city

London

HQ country

United Kingdom

HQ region

Europe

Offices7 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

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

Revenue model

1. Building Services & Engineering: Mechanical and electrical engineering services for commercial buildings including design, installation, and commissioning of MEP systems
2. Building Services Maintenance: Planned and reactive maintenance services for commercial and mixed-use buildings including MEP services
3. Security Systems & Software: Security system design, installation, commissioning, and 24/7/365 maintenance services including CCTV, access control, and monitoring
4. Foodservice Solutions: Commercial kitchen design, equipment supply, installation, and maintenance for hospitality sector including hotels and restaurants
5. Prefabricated M&E Modular Solutions: Factory-built modular MEP solutions for data centres and large commercial projects

Go-to-market motion1 record

Distribution channels2 records

Marketing channels5 records

Core offering

Gratte Brothers provides integrated building services for commercial and mixed-use properties across the UK and Ireland. Its offering spans mechanical and electrical engineering design and installation, off-site prefabricated M&E modules, planned and reactive building maintenance, electronic security systems with software (CCTV, access control, body-worn cameras), commercial kitchen design, supply, installation and maintenance, plus building services design coordination (3D modelling, clash detection).

Product overview

Gratte Brothers Group is a family-owned UK building services company operating through six subsidiary operating companies: Gratte Brothers Limited (Building Services & Engineering), Gratte Brothers Building Services Maintenance Limited and Gratte Brothers Specialist Services (Building Maintenance), Gratte Brothers Security Management Limited (Security Systems & Software), Gratte Brothers Catering Equipment Limited (Foodservice Solutions), and Gratte Brothers Technical Services Limited (Design & Coordination). The company also includes Customised Computer Software Group Limited. Together, these entities provide a vertically integrated suite of building services spanning mechanical and electrical engineering (including prefabricated modular solutions), planned and reactive building maintenance, electronic security systems with software, and commercial catering equipment design, installation, and maintenance. Services are delivered across data centres, commercial offices, hotels, retail, and public sector buildings throughout the UK and Ireland.

Differentiator

Problem solved

Functional benefit

Products and services

• Building Services & Engineering Mechanical and electrical engineering services including design, installation, and project delivery for commercial, residential, and data centre buildings. Covers MEPH (mechanical, electrical, plumbing, heating) shell and core installation for projects such as 21 Moorfields' 55,000m² prime office space.
• Prefabricated M&E Modular Solutions Off-site prefabricated mechanical and electrical modular solutions produced at two dedicated prefabrication facilities for faster, controlled building services installation in data centres and large commercial projects.
• Building Services Maintenance Planned and reactive maintenance services for MEP systems within commercial and mixed-use buildings, delivered through Gratte Brothers Building Services Maintenance (GBBSM) and Gratte Brothers Specialist Services (GBSS), with 24/7 maintenance capabilities.
• Security Systems & Software Electronic security systems including CCTV (with AI technology), access control, perimeter security, intercom systems, body-worn cameras, and cloud-based security software, delivered through Gratte Brothers Security Management (GBSM) and supported by in-house software via Customised Computer Software Group Limited.
• Foodservice Solutions Commercial catering equipment services encompassing commercial kitchen design, supply, installation, and ongoing maintenance, operated through Gratte Brothers Catering Equipment Limited for hospitality customers including hotels and restaurants.
• Design & Coordination Building services design and coordination services including 3D modelling, clash detection, and technical design documentation, delivered through Gratte Brothers Technical Services Limited to support engineering project delivery.
• Commercial EPC Compliance Commercial Energy Performance Certificate compliance services to help clients meet regulatory energy efficiency requirements for commercial buildings.

Quantifiable outcome

• Zero Accident Incident Rate (AIR) across the Group in 2024
• +4 more outcomes

Named customers13 records

Segments5 records

Ideal customer profiles5 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature4 records

Partnerships

Nine partnerships are on record, tiered core and minor.

• NormativecoreTechnology or IntegrationSweden-based carbon calculation engine partnership for calculating scopes 1, 2 and 3 greenhouse gas emissions with pinpoint accuracy. Part of Gratte Brothers' Journey to Net Zero initiative to achieve Net Zero carbon footprint Group-wide.
• PagabocoreChannel Partner/ Reseller/ DistributorLeading UK-based procurement specialist providing Small Works Dynamic Purchasing System (DPS) framework for construction and maintenance projects up to £3 million. Allows Gratte Brothers to be accessed more easily by public sector clients for faster mobilisation.
• CBREcoreStrategic or Co-development PartnerGlobal real estate and development company. Gratte Brothers working in partnership with CBRE and Turner & Townsend delivering comprehensive security upgrade programme across four UK data centre sites under a three-year roadmap.
• Turner & TownsendcoreStrategic or Co-development PartnerProfessional services company. Developed 9-stage security upgrade plan with support from CBRE and Gratte Brothers for data centre security infrastructure modernization.
• ProtecminorOthersClosedLoop remanufacturing scheme allowing Gratte Brothers to send back used floor and wall protection materials to be made into new materials. Accounted for savings equivalent to 10 tonnes of CO2 at one Slough site.
• Community Wood RecyclingminorOthersWood waste partnership where wood is reused in workshops or turned into pellets/chips. In first quarter, 14 tonnes of wood rescued from waste stream equating to 7-tonne CO2 saving.
• Avena WorkwearminorOthersNew partnership ensuring all used PPE and workwear are recycled and turned into new workwear, creating circular system and stopping PPE going to landfill.
• RamcominorOthersCircular economy specialist that connects suppliers with second hand buyers for disposing of old or unused catering equipment responsibly.
• WWFminorOthersWWF Carbon Calculator partnership used during Grattes Goes Green sustainability month. Employees encouraged to find out their carbon footprint using WWF tool.

Scale indicators13 records

Recent moves8 records

Expansion highlights7 records

Direct peers

• NG Bailey: UK's largest independent M&E and building services contractor, offering mechanical, electrical, and prefabricated modular solutions across commercial, data-centre, and industrial markets. Most directly comparable to Gratte Brothers on M&E contracting scope, prefabrication capability, and UK enterprise customer base.
• SPIE UK: European technical building services group with a sizeable UK M&E, security, and FM business. Comparable to Gratte Brothers on multi-disciplinary building services delivery, planned and reactive maintenance, and security systems.
• Willmott Dixon: Family-founded (now employee-owned) UK contractor delivering construction, M&E, maintenance, and interiors across commercial, education, leisure, and public-sector projects. Comparable on building services scope, UK regional delivery model, and long-tenured workforce.
• Bowmer & Kirkland: Privately held UK contractor delivering construction and building services (including M&E and facilities maintenance) across commercial, hospitality, and data-centre projects. Comparable on privately-held status, vertical mix, and mid-to-large UK project execution.
• Mitie Group: UK-listed facilities management and professional services company with large security systems and building maintenance businesses. Comparable to Gratte Brothers on security systems, planned/reactive maintenance, and multi-vertical enterprise client base.
• EMCOR Group (UK): UK arm of EMCOR Group providing mechanical and electrical building services, facilities management, and modular solutions to commercial and industrial clients. Comparable on M&E contracting, planned maintenance, and modular/factory-built solutions.

Broad incumbents

• Balfour Beatty: FTSE-listed international infrastructure group with substantial UK building services and M&E delivery. Operates far more broadly than Gratte Brothers but overlaps on large commercial M&E projects and long-term maintenance frameworks.
• Skanska UK: Swedish-headquartered construction and development group with significant UK M&E and building services operations. Comparable on commercial and public-sector building services, but as part of a much larger international portfolio.
• Mace Group: Global consultancy and construction firm operating in the UK across construction, consultancy, and facilities management. Comparable on commercial real estate and data-centre delivery but with a much wider service portfolio than Gratte Brothers.

Regional players

• John Sisk & Son: Irish-headquartered, family-rooted contractor with strong UK and Ireland building services and M&E operations. Comparable to Gratte Brothers on privately-held, family-heritage positioning and Irish/UK geographic footprint.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat6 records

Key risks6 records

Key highlights7 records

Customer concentration

• Xx.com/grattebrothers
• LinkedInlinkedin.com/company/494641

Compliance8 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles14 records

Subsidiaries6 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 Gratte Brothers