Heyne Tillett Steel

What Heyne Tillett Steel does

Heyne Tillett Steel is a London-headquartered structural, civil, and geotechnical engineering consultancy founded in 2007 by Andy Heyne, Mark Tillett, and Tom Steel. The practice operates from offices in London and Manchester and has grown to nearly 200 staff delivering a portfolio of more than 3,500 completed projects across the UK. Its core offering covers structural engineering (new build, refurbishment, heritage), civil engineering (drainage, flood risk, highways, earthworks), geotechnical engineering (site investigation, foundations, retaining structures), and transport and highways engineering, with a particular focus on complex urban sites and challenging ground conditions.

The firm's distinguishing technical capability centres on low-carbon and sustainable construction methods, including structural retention, steel reuse, timber engineering, hybrid structures, and concrete decarbonisation. It has pioneered reuse of reclaimed structural steel (notably 25 tonnes at Grosvenor's Holbein Gardens), delivered what it describes as the largest commercial CLT project in the UK (Timber Square for Landsec), and deployed 65% GGBS cement replacement at TIDE Bankside. A self-funded research and innovation unit, HTS+, employs full-time research engineers, materials scientists, and software developers, producing proprietary tools such as Stockmatcher (an open-source tool for matching reclaimed steel sections to design requirements) and a vibration modelling methodology for timber structures developed in collaboration with the University of Sheffield.

The business operates as a professional services consultancy on project-based, tendered engagements with enterprise clients including Landsec, Related Argent, Grosvenor, British Land, LBS Properties/Barings, Helical, Swan NU Living, and various local authorities. It became an Employee-Owned Trust in 2021 and achieved B Corp certification in 2023, and co-founded the Engineers' Reuse Collective and participates in the Accelerating Concrete Decarbonisation Group. Revenue, pricing, and contract values are not publicly disclosed.

Name

Heyne Tillett Steel

Legal name

Heyne Tillett Steel Limited

Website

https://hts.uk.com

Company type

Private

Founded year

2007

Operating status

Operating

Headcount range

101–250 employees

Short description

Heyne Tillett Steel is a UK structural, civil, and geotechnical engineering consultancy serving enterprise real estate developers, local authorities, and education clients. Founded in 2007, it employs nearly 200 staff focused on low-carbon, sustainable engineering for complex urban sites.

Ownership category

akta.pro rank

Product category

Structural Engineering Services

NAICS

Fabricated Structural Metal Manufacturing (332312)

SIC

General Bldg Contractors - Nonresidential Bldgs (1540)

akta.pro primary industry

Foundation Remediation & Underpinning (Jack Piles, Resin Injection, Re-leveling) (IMAFAOAL)

akta.pro secondary industries

Bridge & Infrastructure Steel Components (IMADACAL), Mass Timber & Structural Engineered Wood (CLT, Glulam, NLT/DLT) (IMADADAC)

Keywords

• Structural engineering services
• Civil engineering consulting
• Geotechnical engineering services
• Low carbon construction design
• Sustainable structural design

Headquarters

HQ city

London

HQ country

United Kingdom

HQ region

Europe

Offices2 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

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

Revenue model

1. Structural Engineering Consulting: Professional services revenue from providing structural, civil, and geotechnical engineering services for construction projects across residential, commercial, industrial, and public sectors.

Go-to-market motion1 record

Distribution channels1 record

Marketing channels7 records

Core offering

Heyne Tillett Steel is a structural and civil engineering consultancy delivering integrated structural, civil, geotechnical, and transport & highways engineering for new-build, refurbishment, and heritage projects. The practice specialises in low-carbon, sustainable design across complex urban sites, with proprietary research capabilities (HTS+) supporting steel reuse, timber engineering, and embodied carbon reduction.

Product overview

Heyne Tillett Steel is a structural engineering consultancy offering integrated civil, geotechnical, and transport engineering services. The practice operates a core service model supplemented by HTS+, an internal research and innovation initiative, and Stockmatcher, an open-source steel reuse matching tool. Together these components enable low-carbon engineering for complex urban sites across residential, commercial, industrial, and heritage sectors.

Differentiator

Problem solved

Functional benefit

Products and services

• Structural Engineering Full-service structural engineering including new build, refurbishment, and heritage projects across residential, commercial, and mixed-use sectors. Delivered to property developers, architects, and public sector clients.
• Civil Engineering

Quantifiable outcome

• Timber Square achieved 30% reduction in embodied carbon and 15% reduction in weight compared to typical new-build
• +4 more outcomes

Named customers8 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

Feature3 records

Partnerships

Five partnerships are on record, tiered core and supporting.

• Engineers' Reuse Collective (ERC)coreStrategic or Co-development PartnerCo-founded in 2023 by six engineering practices (Buro Happold, Civic Engineers, Elliott Wood, Heyne Tillett Steel, Webb Yates, Whitby Wood) to accelerate circular economy in construction. Incorporated as not-for-profit Community Interest Company launched December 2024. HTS Director James Morgan is a founding member. The collective develops tools, guidance, and best practices for reuse across the industry.
• Accelerating Concrete Decarbonisation Group (ACDG)coreStrategic or Co-development PartnerDeveloper-led group working to drive down carbon emissions of concrete through real-time prototyping and testing. HTS participates as member working on industry-wide decarbonisation initiatives.
• Cleveland Steel & TubescoreTechnology or IntegrationPrimary UK supplier of reclaimed structural steel for reuse, with over 7,000 tonnes of stock available. HTS uses Cleveland Steel as preferred supplier for steel reuse projects, working closely to match available material with design requirements.
• University of SheffieldsupportingStrategic or Co-development PartnerAcademic collaboration on vibration modelling research for timber structures. Physical testing conducted on HTS completed projects to compare computational predictions with real-world performance.
• Institution of Structural Engineers (IStructE)supportingOthersHTS works with IStructE through the Engineers' Reuse Collective, which is headquartered at IStructE facilities. Director James Morgan writes for The Structural Engineer publication on circular economy topics.

Scale indicators5 records

Recent moves8 records

Expansion highlights5 records

Market position

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

• Xinstagram.com/heynetillettsteel
• LinkedInlinkedin.com/company/heyne-tillett-steel
• Instagraminstagram.com/heynetillettsteel

Revenue estimate

Valuation estimate

Number of profiles

Profiles13 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 Heyne Tillett Steel