Fit-Out Companies in London: 1,758 Active Firms (2026)
Fit-out and refurbishment companies design, manage and deliver interior upgrades and repair works for commercial and residential buildings across London.
Buying centres tend to sit with property, estates, facilities and project-management teams, with procurement involved once packages move into multi-trade delivery. The customer base is mostly B2B: commercial property teams, residential asset owners and mixed-use developers using contractors for interiors, repair, maintenance and upgrade work. Engagements are usually contract-led and site-specific, with scopes defined by surveys, drawings, programmes, access constraints and compliance evidence. The better fit for this list is therefore a contractor with coordination capacity across trades, not a single-trade decorator or a pure design studio.
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London has 1,758 trading fit-out and refurbishment companies, a sizeable contractor base but still a fragmented one. Reported headcount totals 2,542, suggesting the visible employment footprint is concentrated in relatively lean delivery organisations rather than in a small group of national-scale contractors. The city context matters because projects are usually close to occupied assets, with access constraints, client sign-off and compliance evidence shaping delivery as much as trade capacity.
Fit-out sits inside construction regulation rather than a standalone sector licence. HSE rules on construction management place duties on clients, designers and contractors, including planning, competence and site-safety obligations. In England, Building Regulations duties now put more emphasis on accountable dutyholders, documented competence and project records; higher-risk building work can bring Building Safety Regulator approval and information requirements. Trade-body activity through the Finishes and Interiors Sector also matters, mainly because benchmarking, standards and guidance help define what competent interior delivery looks like.
Commercial demand appears tied less to speculative new build than to estate reuse, compliance-led upgrades and tenant churn. That tends to favour contractors able to manage live-site disruption, records, subcontract packages and client assurance, rather than firms competing only on finishing trades. Scale-up remains relatively difficult: each project carries local labour, access and risk controls, so repeatability is lower than in productised construction services. Consolidation may continue where buyers want broader trade coverage, but the market still looks likely to retain a long tail of local specialists.
What’s in the file
One row per company, 50+ columns — everything below plus each company’s verified directors, from Companies House filings.
Company data
Verified directors — included
1,758
Active firms
2026
159
Above £5M
revenue threshold
138
Recent incorporations
since 2022
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Key facts
About 9% of the trading cohort reports turnover above £5M (159 of 1,758 firms) — the rest sits below that revenue band.
7% of the cohort was incorporated since 2022 (138 firms), so a sizeable share is in its first few filing cycles.
ONS construction output increased by 0.4% in 2024, solely because repair and maintenance rose by 8.5% while new work decreased by 5.3%.
In December 2024, total repair and maintenance output was £7,773 million, including £3,991 million from non-housing work and £2,940 million from private housing work.
The HSE’s Construction (Design and Management) Regulations 2015 cover construction and building work, including dutyholder roles and F10 project notification where applicable.
The Building Regulations etc. (Amendment) (England) Regulations 2023 add duties and competence requirements for clients, designers and contractors; higher-risk building work can trigger Building Safety Regulator processes.
EU Renovation Wave policy aims to renovate 35 million buildings by 2030 and at least double the annual rate of energy renovations in the EU.
Top London Fit-Out companies
Financial sub-scores
Computed from 3 filingsProvides office fit-out and refurbishment services for commercial spaces, including interior design, workplace consultancy, CAT A and CAT A+ fit-outs, structural refurbishment, and project management…
Serves B2B commercial property occupiers, landlords and organisations with office space needs, including corporate, education, museum and aviation clients, with London explicitly emphasised.
Financial Health
StrongStrong · Hiring · 14% CAGR over 2y
Location
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Financial sub-scores
Computed from 5 filingsProvides commercial interior fit-out and refurbishment services, including Cat A and Cat B office fit-outs, cut-and-carve refurbishments, and residential development interiors. Offers…
Serves businesses, commercial landlords, property developers and residential development clients commissioning interior projects, with an emphasis on London-area organisations and project owners.
Financial Health
StableStable · -38% CAGR over 6y
Location
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Financial sub-scores
Computed from 4 filingsProvides construction contracting services including new build, refurbishment, structural works, and interior fit-out for commercial, residential, hotel, retail, and leisure buildings, delivering…
Serves property developers, investors, landlords and asset owners in central London across office, hotel, leisure, healthcare, retail and high-end residential schemes.
Financial Health
StableStable · 0% CAGR over 3y
Location
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Financial sub-scores
Computed from 5 filingsProvides residential and commercial interior fit‑outs, refurbishment and building maintenance services. Delivers full project management from construction to completion, including mechanical and…
Serves property developers, property portfolio managers and commercial property owners, including blue-chip housebuilders and developers, focused on high-end residential and office projects in…
Financial Health
HealthyHealthy · Hiring · 7% CAGR over 5y
Location
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Financial sub-scores
Computed from 3 filingsProvides building refurbishment and construction services including planned and cyclical maintenance, structural repairs, office fit‑outs, internal and external decoration, conversions, and new build…
Serves public and private sector property clients in London and the South East, including local authorities, housing providers, education and healthcare estates, heritage building owners, commercial…
Financial Health
StableStable · -5% CAGR over 2y
Location
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Financial sub-scores
Computed from 2 filingsProvides building refurbishment, maintenance and construction services as a main contractor. Undertakes structural repairs, new builds, office fit-outs, conversions, decorations and planned…
Serves public and private sector clients in London and the South East, including housing providers, education and healthcare bodies, and owners or managers of commercial, residential, heritage and…
Financial Health
WeakWeak · Hiring · 945% CAGR over 1y
Location
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Financial sub-scores
Computed from 5 filingsProvides commercial building fit‑out, construction and facilities management services. Delivers design, procurement and installation of interior fit-outs and building works, plus ongoing maintenance…
Serves B2B commercial clients, including high-street brands and operators in office, retail, food and beverage, restaurants and hotels, with projects primarily in Central London.
Financial Health
StrongStrong · Growing, Hiring · 14% CAGR over 4y
Location
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Financial sub-scores
Computed from 4 filingsActs as a principal contractor delivering building refurbishment, retrofit and interior fit‑out projects. Provides design-and-build services, early-stage planning and technical assessments, and…
Serves property owners, developers and asset managers commissioning £50k-£10m refurbishment, retrofit and fit-out projects across commercial, heritage and residential buildings, including offices,…
Financial Health
StrongStrong · Growing, Hiring · 122% CAGR over 3y
Location
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Financial sub-scores
Computed from 3 filingsProvides building refurbishment and contracting services, specialising in repairs, remodelling and interior and exterior fit‑outs. Delivers projects for residential properties, education facilities,…
Serves universities, schools, property management companies, councils, and commercial or heritage property owners across London and the South East, mainly as B2B and public sector clients.
Financial Health
StableStable · Hiring · 7% CAGR over 2y
Location
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Financial sub-scores
Computed from 5 filingsProvides internal and external building refurbishment and fit‑out services, including redecoration, mechanical and electrical works, carpentry, partitioning, roofing, brick and stonework,…
Serves building surveyors, architects, local authorities and housing trusts commissioning building refurbishment and fit-out projects, including offices, schools, warehouses and health centres.
Financial Health
StableStable · Hiring · 11% CAGR over 4y
Location
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Computed from 5 filingsProvides construction and building contracting services for public and private sector clients, including justice and custodial facilities, commercial offices and retail, residential properties,…
Serves public sector bodies and commercial and domestic clients across London and the South East, including justice and custodial organisations, NHS and care providers, schools, offices, retailers,…
Financial Health
StrongStrong · Growing · 0% CAGR over 4y
Location
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Computed from 5 filingsProvides commercial construction and project management services, specialising in interior fit-outs and refurbishment for offices, retail, hospitality and industrial spaces, including CAT A and CAT B…
Serves B2B commercial property clients, developers and occupiers, mainly in London and the South East, across office, retail, industrial, hospitality and listed-building projects.
Financial Health
HealthyHealthy · 0% CAGR over 4y
Location
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Provides construction contracting services including refurbishment, fast‑track fit‑outs, structural alterations and new builds. Works on hospitals, laboratories, education facilities, heritage…
Serves public and private sector clients in London and the South East, including hospitals, universities, schools, research institutions, heritage property owners, commercial organisations and…
Financial Health
N/AN/A
Location
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Financial sub-scores
Computed from 3 filingsProvides office fit-out and commercial refurbishment services including workplace design, space planning, CAT A and CAT B fit-outs, dilapidations works, construction and interior finishing, and…
Serves B2B office occupiers, commercial landlords and property teams in London and the Southeast, including professional services, financial institutions and architecture firms planning workplace…
Financial Health
StableStable · -13% CAGR over 2y
Location
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Financial sub-scores
Computed from 5 filingsProvides building contracting services, specialising in high-end residential refurbishment, commercial and office fit-outs, new-build construction, and extensions. Also undertakes basement…
Serves property developers, landlords, private high-net-worth homeowners and commercial occupiers commissioning high-end residential, office, student accommodation, hotel/leisure and mixed-use…
Financial Health
StrongStrong · Growing, Hiring · 10% CAGR over 4y
Location
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Computed from 3 filingsProvides commercial and residential fit-out and refurbishment services, delivering fast-track construction projects through traditional and design-and-build procurement. Works across workplace,…
Serves commercial property occupiers, developers and owners across workplace, industrial, healthcare, education, leisure, retail and hospitality sectors, plus private residential clients and…
Financial Health
WeakWeak · 0% CAGR over 2y
Location
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Computed from 3 filingsProvides construction and refurbishment services including office and retail fit-outs, residential building works, and renovations in healthcare, education, and social housing properties. Also offers…
Serves public-sector and commercial clients across London and the South of England, including NHS trusts, universities, councils/social housing providers, office occupiers, retail operators, and…
Financial Health
HealthyHealthy · Hiring · 29% CAGR over 2y
Location
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Computed from 5 filingsProvides commercial fit-out and refurbishment contracting services, including office, retail and hotel interiors. Offers project management, CAD design development, and manufacture of bespoke joinery…
Serves B2B clients including retail, hospitality, hotel and office occupiers, from established brands to growing businesses, with a strong focus on London and UK-wide projects.
Financial Health
StableStable · 0% CAGR over 4y
Location
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Computed from 5 filingsProvides commercial and residential property refurbishment services including painting and decorating, drylining, plumbing and heating works. Acts as a main contractor delivering commercial fit-outs,…
Serves B2B property clients, including commercial landlords, luxury hotels, property managing agents and residential block stakeholders needing Section 20 works, mainly across London and nationwide.
Financial Health
StrongStrong · Growing, Hiring · 12% CAGR over 4y
Location
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Computed from 5 filingsProvides construction contracting services including office refurbishment, airport and aviation building works, and joinery and interior fit‑out. Delivers building and refurbishment projects for…
Serves B2B clients in aviation, commercial property, offices, leisure, heritage and residential development, including organisations with live or operational sites.
Financial Health
StableStable · Hiring · 3% CAGR over 4y
Location
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Computed from 3 filingsProvides building construction, refurbishment and property maintenance services for residential and institutional properties. Delivers repairs, kitchen and bathroom installations, plastering,…
Serves public and private sector property owners and managers in London, including housing associations, local authority housing partners, universities and residential developers.
Financial Health
HealthyHealthy · -11% CAGR over 2y
Location
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Computed from 5 filingsProvides building and refurbishment services as a main contractor, including architecture and interior design, bespoke joinery manufacture, decorating and spray finishing, and property maintenance…
Serves high-end residential property owners and developers, private clubs, and retail/commercial clients, mainly in prime London locations with some overseas projects in France.
Financial Health
DistressedDistressed · -10% CAGR over 4y
Location
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Computed from 4 filingsProvides commercial building refurbishment, fit-out and property maintenance services, including mechanical and electrical installations and maintenance, inspection and testing, painting and…
Serves commercial property owners and clients in the commercial, residential and industrial markets across Central London and South East England, from small jobs to larger building projects.
Financial Health
HealthyHealthy · 3% CAGR over 3y
Location
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Computed from 3 filingsProvides property maintenance, repair, and refurbishment services for residential and commercial buildings, including void refurbishments, kitchen and bathroom installations, roofing, drainage,…
Serves registered social landlords, private residential property owners, schools and commercial property clients in London and the surrounding home counties.
Financial Health
StrongStrong · Growing, Hiring · 15% CAGR over 2y
Location
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Computed from 3 filingsProvides office refurbishment and interior fit‑out services for commercial properties, including workspace redesign, partitioning, glass installations and building works. Manages projects from…
Serves businesses of all sizes, including commercial, retail and industrial clients, primarily across London, the Home Counties and the South East.
Financial Health
StableStable · Hiring · 46% CAGR over 2y
Location
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Computed from 5 filingsProvides construction and building services including refurbishment, maintenance, and mechanical and electrical (M&E) works. Delivers projects for schools, universities, healthcare facilities,…
Serves public-sector and institutional clients, including London schools and universities, local authorities, housing associations, NHS healthcare providers, heritage estates, and sports or…
Financial Health
WeakWeak · -2% CAGR over 5y
Location
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Computed from 5 filingsProvides commercial construction and interior fit-out services, including installation of suspended ceilings, partitioning systems, dry-lining, glass walls and joinery. Also carries out refurbishment…
Serves UK commercial construction clients, from sole professionals and local businesses to national and international organisations, plus designers and property stakeholders managing fit-out,…
Financial Health
HealthyHealthy · -6% CAGR over 4y
Location
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Computed from 3 filingsProvides commercial interior fit-out and refurbishment services including design and build, space planning, CAT A and CAT B office fit outs, furniture procurement, lighting design, and installation…
Serves businesses investing in commercial premises, particularly office occupiers and other commercial space users seeking fit-out, refurbishment and design-and-build services, with emphasis on…
Financial Health
StrongStrong · Hiring · 41% CAGR over 2y
Location
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Computed from 3 filingsProvides interior fit-out and refurbishment services for office buildings and commercial premises. Acts as a main contractor delivering workplace interior construction, refurbishment and redesign…
Serves B2B and institutional clients, including corporate occupiers, property landlords/developers, universities, charities and public-facing organisations with office or commercial premises in…
Financial Health
HealthyHealthy · Profitable · -1% CAGR over 2y
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Computed from 4 filingsProvides construction contracting services including high-end interior fit-outs, residential new builds, and refurbishments. Offers building design, property development, mechanical and electrical…
Serves public- and private-sector clients, property developers and organisations commissioning high-end fit-out, refurbishment and new-build residential projects in London and the South East.
Financial Health
StrongStrong
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Computed from 5 filingsProvides construction and building contracting services for commercial, residential and public sector projects. Services include refurbishment, structural works, interior finishing, fire safety…
Serves commercial and industrial property clients, public sector bodies, housing associations and high-end residential customers in London and surrounding areas.
Financial Health
StrongStrong · Growing, Hiring · 19% CAGR over 4y
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Computed from 4 filingsProvides commercial construction and refurbishment services, including office fit-outs, building refurbishment and restoration projects. Manages and delivers building transformation works for…
Serves commercial property owners, landlords, asset managers and occupiers across London and the South East, including offices, industrial estates, automotive retail sites and high-end residential…
Financial Health
DistressedDistressed · -16% CAGR over 3y
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Computed from 4 filingsProvides construction contracting services including office fit-outs, refurbishments, building maintenance, and joinery for commercial and public sector premises. Manages design-and-build projects…
Serves UK commercial property clients, public-sector bodies, schools, healthcare facilities, retail and leisure operators, and residential-sector clients needing building project support.
Financial Health
HealthyHealthy · -7% CAGR over 3y
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Computed from 2 filingsProvides construction services including new build, refurbishment and fit‑out projects. Delivers fire remediation and mechanical and electrical works, and undertakes residential developments and…
Serves public-sector and private clients across London and the South East, including local authorities, housing associations, charities, education and healthcare providers, heritage bodies,…
Financial Health
HealthyHealthy · Hiring · 27% CAGR over 1y
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Computed from 3 filingsProvides construction and refurbishment services for educational institutions, including classroom fit-outs, building upgrades and student accommodation refurbishments. Also offers term contracting,…
Serves educational institutions across London and the Home Counties, targeting project managers, facilities and estate management teams, and student accommodation stakeholders in schools, colleges…
Financial Health
HealthyHealthy · Profitable · 5% CAGR over 2y
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Computed from 5 filingsProvides interior fit-out and refurbishment services for commercial and residential properties, including installation of glass and drywall partitions, suspended ceilings, flooring, kitchens and…
Serves commercial property owners, office occupiers, public-sector estates teams and homeowners across London, the South East and beyond.
Financial Health
HealthyHealthy · Hiring · 11% CAGR over 4y
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Computed from 4 filingsProvides construction and refurbishment services for commercial buildings, warehouses and multi-let industrial units. Delivers design-and-build projects, office and industrial fit-outs, building…
Serves asset management companies, property and land owners, property managers, building consultancies and agents responsible for warehouses, multi-let industrial units, offices and commercial…
Financial Health
StrongStrong · Growing, Hiring · 4% CAGR over 3y
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Computed from 5 filingsProvides construction and design-and-build services for commercial, education, healthcare, leisure, social housing and religious buildings. Undertakes refurbishment, heritage and conservation works,…
Serves B2B, public-sector and third-sector clients in commercial property, healthcare, leisure, education, social housing, religious buildings, heritage/conservation and fire-upgrade sectors.
Financial Health
HealthyHealthy · -60% CAGR over 4y
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Computed from 3 filingsProvides external and internal building refurbishment and repair services for residential blocks, schools, and historic properties. Services include redecoration, façade and roof repairs, restoration…
Sells to chartered surveyors, managing agents, residents’ committees and architects overseeing refurbishment projects for larger or multi-occupancy buildings, especially residential mansion blocks,…
Financial Health
HealthyHealthy · Hiring · 25% CAGR over 2y
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Computed from 5 filingsProvides main contracting services for construction projects, including residential and mixed‑use developments, commercial buildings, refurbishments and interior fit‑outs. Manages projects from…
Serves property developers, landlords, institutions and commercial clients commissioning UK construction, refurbishment and fit-out projects across residential, mixed-use, office, education and civic…
Financial Health
StrongStrong · Profitable, Growing, Hiring · 72% CAGR over 4y
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Computed from 3 filingsProvides general contracting and construction management services for commercial building projects, including preconstruction, site and building evaluation, procurement, commissioning, and interior…
Serves commercial, institutional and public-sector clients in London and the South East, including corporate occupiers, financial firms, healthcare, education, government, hospitality, retail,…
Financial Health
StableStable
Location
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Computed from 3 filingsProvides building maintenance, repair and refurbishment services. Works on public and commercial properties including hospitals, schools, housing association buildings and other facilities,…
Serves public sector bodies and property-owning organisations, including NHS trusts, local authorities, schools, colleges, housing associations and commercial property clients across London, Essex,…
Financial Health
HealthyHealthy · Growing · 0% CAGR over 2y
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Computed from 5 filingsProvides construction and refurbishment services including domestic renovations, commercial fit-outs, and external works. Services include fire stopping and fire door installation, heating and…
Serves main contractors, housing providers, local councils and commercial property clients, mainly in Greater London, on refurbishment, fit-out, fire safety and building works.
Financial Health
StrongStrong · Growing, Hiring · 8% CAGR over 4y
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Computed from 3 filingsProvides construction and shopfitting services as a main contractor, delivering building fit-outs, new builds and refurbishments. Undertakes demolition, structural alterations, MEP installations and…
Serves commercial clients and leading brands, particularly retailers and businesses with trading premises requiring shop-fit, refurbishment, new-build or small-works projects with minimal closure…
Financial Health
StableStable · Hiring · 32% CAGR over 2y
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Computed from 3 filingsProvides building construction and refurbishment services as a principal contractor or subcontractor. Delivers building refurbishments, conversions of existing spaces, cladding installation and…
Serves social housing landlords, building consultants, property management agents and Tier 1 contractors, primarily on large refurbishment projects across London and the South East.
Financial Health
StableStable · -4% CAGR over 2y
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Computed from 2 filingsProvides construction and refurbishment services, delivering building projects across residential, healthcare, education and public sectors. Carries out retrofit, cladding and fire safety works,…
Serves B2B and public sector clients in London, including housing associations, local authorities, education and healthcare bodies, and commercial property owners needing refurbishment, retrofit,…
Financial Health
HealthyHealthy · Profitable · 1% CAGR over 1y
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Computed from 5 filingsProvides building contracting services including basement construction, new builds, design and build projects, home renovations, house extensions, commercial fit-outs, and refurbishment of…
Serves private homeowners, property developers, commercial occupiers and public-sector clients in central London, with emphasis on high-end residential, refurbishment, fit-out and heritage projects.
Financial Health
HealthyHealthy · Hiring · 8% CAGR over 4y
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Computed from 5 filingsProvides building refurbishment and maintenance services, including external restoration and internal fit‑out for residential, commercial, educational and public sector properties. Undertakes…
Serves public and private sector property clients, including local authorities, schools and colleges, healthcare and commercial property owners, residential landlords/private clients, and custodians…
Financial Health
HealthyHealthy · -4% CAGR over 4y
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Computed from 5 filingsProvides construction services including new-build and refurbishment projects for commercial, residential, retail, public and historic buildings. Undertakes building works for theatres, retail stores…
Serves commercial property owners, residential developers, retailers, cultural venues, public-sector bodies and custodians of historic buildings, primarily in London.
Financial Health
StableStable · -70% CAGR over 4y
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How London Fit-Out companies work and how to sell to them
What they do
Most London fit-out contractors earn revenue through project contracts, framework call-offs, planned maintenance packages and negotiated refurbishment works. Pricing is usually built from a survey, drawings, a schedule of works, preliminaries, materials, subcontract labour and margin, with variations managed as the scope changes on site. Smaller works may be quoted directly after a visit; larger interior packages tend to involve tender packs, programme commitments, warranties and handover evidence. The commercial model is therefore part construction delivery and part risk management, with cash tied to staged payments, retentions, snagging and client sign-off.
Who they sell to
Typical buyers are property owners, managing agents, occupiers, developers and residential asset managers running live buildings or phased refurbishments. The first conversation often sits with an estates manager, facilities lead, project manager, asset manager or quantity surveyor, before procurement and finance test price, insurance, competence and references. Sales cycles vary by job type: reactive repair can move quickly, while multi-trade refurbishment is more likely to pass through pre-qualification, site visits, tender clarification and commercial negotiation. Most suppliers win through direct relationships, repeat work, contractor lists, consultant referral and framework access rather than self-serve purchasing.
What they buy
Most fit-out firms tend to spend on tools that protect margin, programme control and compliance evidence. Common categories include estimating software, job costing, project management, document control, health and safety systems, site diaries, workforce scheduling, timesheets, subcontractor management, procurement, fleet management and accounting. Services spend often clusters around insurance, legal support for contracts and disputes, accountancy, payroll, recruitment and specialist marketing for tender visibility. Contractors with broader trade coordination may also buy training, accreditation support, audit preparation, materials logistics and temporary site facilities, particularly when moving from small works into more complex occupied-building projects.
Why and how to sell to them
Fit-out buyers tend to evaluate vendors when project volume rises, subcontractor coordination becomes harder, or clients ask for better records, safety evidence and handover packs. Other triggers include hiring project managers or quantity surveyors, winning a framework, taking on higher-risk building work, expanding from single-trade delivery into multi-trade packages, or facing margin leakage from variations and rework. Outbound messaging is likely to land better when it connects to programme certainty, faster estimating, cleaner evidence trails, retention reduction, cashflow visibility or fewer disputes. Generic construction language is less useful than proof that the offer fits live-site refurbishment and London access constraints.
How this list is built
Data sources
This list is built from UK Companies House filings, XBRL accounts data, and semantic analysis of each company's public website. Revenue and headcount figures come from the most recent filed accounts; where the company has not filed, values are estimated using a model trained on filed history and peer benchmarks and are labelled as estimates.
Classification
Rather than relying solely on SIC codes, Firmbase classifies each company semantically: the company's website is crawled, an AI model reads what the company actually sells, and the company is placed into the relevant industry and subsectors. SIC codes are used as one signal but not the only one. This means a company that registered under a generic SIC code but pivoted into (for example) fintech is correctly identified as fintech, not as its original SIC category.
Freshness
The underlying company data is refreshed from Companies House continuously; filings appear in the list within days of submission. The curated list ordering is regenerated when the underlying data moves meaningfully (company count changes by more than 5%, a new company enters the top-ranked segment, or the filed-revenue numbers for the top firms change). You can see the last-updated timestamp near the top of the page.
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Frequently asked questions
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