Joinery Companies in London: 1,899 Active Firms (2026)
Joinery companies in London manufacture, fit and repair timber interiors, doors, stairs and site carpentry for construction clients.
Buying centres cluster around main contractors, fit-out specialists, developers, architects and estates teams, with procurement often split between tendered subcontract packages and repeat small-works call-offs. Residential refurbishments, commercial fit-outs and public-sector maintenance each have different purchasing rhythms: private clients often value finish and responsiveness, while contractor-led work places more weight on programme control, documentation and defect management. Engagements tend to be project-based, from bespoke interior packages to door, stair and partition scopes that need coordination with building control, fire-safety requirements and site sequencing across Greater London.
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London has 1,899 joinery and carpentry companies actively trading, making it a sizeable local subcontracting pool rather than a market defined by a small set of large workshops. The reported employment footprint is 978 people, which should be read as a visible labour measure rather than the whole set of installers, subcontractors and owner-managed shops involved in project delivery. The local shape is therefore fragmented: many suppliers appear geared to small works, residential refurbishment and contractor packages, while a smaller tier can support documentation-heavy commercial and public-sector scopes.
Building-control duties shape much of the compliance burden, because joinery and carpentry work does not sit under a dedicated sector licence. GOV.UK describes competent person schemes as a route for some building-trade installers to self-certify eligible work instead of seeking separate building regulations approval; participation is voluntary, and approved work remains subject to ongoing inspection. The British Woodworking Federation sits in the trade-body layer rather than the regulator layer, providing regulatory information and operating schemes for fire doors and stairs. For London subcontractors, that makes specification, installation evidence and product traceability commercially important, especially where internal doors and stair packages are part of wider building works.
Refurbishment, fire-safety work and commercial fit-out appear likely to keep demand linked to the construction cycle rather than to consumer retail patterns. Buyers tend to reward suppliers that can document materials, installation method and remedial action, so smaller workshops may face heavier administrative expectations even where the physical work is familiar. Scale-up scarcity may persist, because labour availability, workshop space and project cashflow all constrain expansion. Consolidation has been more plausible around repeat contractor relationships and specialist manufacturing capability than around general site carpentry alone.
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
1,899
Active firms
2026
24
Over £5M turnover
London firms
415
Since 2022
Newer incorporations
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Key facts
About 1% of the trading cohort reports turnover above £5M (24 of 1,899 firms) — the rest sits below that revenue band.
21% of the cohort was incorporated since 2022 (415 firms), so a sizeable share is in its first few filing cycles.
GOV.UK says competent person schemes let building-trade installers self-certify certain types of building work instead of seeking building regulations approval, with voluntary membership and ongoing inspections.
ONS construction statistics for Great Britain report new work of £140,684 million in 2024, up 1.4%, and construction new orders of £71,707 million, up 5.6%.
ONS recorded 370,770 VAT/PAYE-registered construction firms in Great Britain in Q3 2024, up 1.7% year on year.
The British Woodworking Federation has 500+ members and operates industry schemes covering fire doors and stairs, reflecting the role of specification and installation standards.
A 2026 industry analyst report characterises global builders’ joinery and carpentry of wood as low-concentration, with residential construction accounting for 59.95% of sales.
Top London Joinery companies
Financial sub-scores
Computed from 5 filingsProvides bespoke joinery and interior fit-out services for construction projects. Delivers design development, pre-construction planning, mock-ups and full project delivery for commercial,…
Serves Tier 1 main contractors, developers and construction clients across commercial, residential, healthcare, education, leisure and heritage building projects, with case studies focused on large…
Financial Health
HealthyHealthy · Hiring · 4% CAGR over 4y
Location
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Computed from 5 filingsProvides carpentry and joinery services for construction and refurbishment projects, specialising in second-fix carpentry, fire door installation, timber and acoustic flooring, kitchen fitting, and…
Serves property developers, main contractors and clients delivering residential, commercial and refurbishment projects across Greater London, including large-scale housing developments.
Financial Health
HealthyHealthy · -10% CAGR over 4y
Location
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Computed from 5 filingsProvides carpentry and joinery contracting services for construction projects, including roof structures, stairs and balustrades, first and second fix carpentry, kitchen installation, decking, timber…
Serves main contractors and property developers in London and the South East, across residential new build and refurbishment projects, commercial fit-outs, hotels and schools.
Financial Health
HealthyHealthy · Hiring · 32% CAGR over 5y
Location
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Computed from 4 filingsProvides carpentry and joinery services for construction projects, working with main contractors across commercial, residential, education, rail, hotel and healthcare sectors. Services include…
Serves UK main contractors delivering education, rail, residential, commercial, hotel and healthcare projects, typically on mid-to-large construction packages.
Financial Health
HealthyHealthy · 0% CAGR over 3y
Location
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Computed from 5 filingsProvides carpentry and joinery subcontracting services for construction projects, including general carpentry, cut‑and‑carve refurbishments, and supply‑and‑fix installations. Works with main…
Serves main contractors, construction clients, design teams and end users, primarily on refurbishment and construction projects in Central London and within the M25.
Financial Health
StableStable · -25% CAGR over 4y
Location
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Computed from 3 filingsProvides carpentry subcontracting services for construction projects, including first and second fix carpentry, timber roofing, kitchen installation, staircases, flooring, windows and timber…
Serves main contractors and construction project teams in commercial, education, leisure, retail and residential sectors, including hotels, care homes, schools, universities, student accommodation…
Financial Health
WeakWeak · 0% CAGR over 2y
Location
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Computed from 3 filingsDesigns, manufactures and installs bespoke carpentry and joinery products including custom doors, windows, staircases and furniture. Provides design, planning, CNC machining and in‑house fabrication…
Serves homeowners, architects, interior designers and building companies, with customers in industrial and heritage sectors across Greater London and the Home Counties.
Financial Health
StrongStrong · Hiring · 22% CAGR over 2y
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Computed from 3 filingsProvides carpentry and joinery services for residential and commercial construction projects, including structural timber installation, specialist joinery, window and glazing installation, and fire…
Serves main contractors, developers and project owners on UK residential and commercial construction projects, including new builds and refurbishments requiring certified site works.
Financial Health
StableStable · -23% CAGR over 2y
Location
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Computed from 3 filingsProvides building and joinery services including residential refurbishments, kitchen and bathroom replacements, void property refurbishment, and planned maintenance for housing associations and local…
Serves local authorities, housing associations and social housing providers across London, Essex and the South East, including councils and arms-length housing organisations managing residents’ homes.
Financial Health
StableStable · -2% CAGR over 2y
Location
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Computed from 5 filingsManufactures bespoke timber joinery products including box sash and replacement windows, entrance and French doors, staircases, shopfronts, and moulded timber components such as skirting and…
Serves homeowners, property developers, businesses, government agencies and blue-chip companies in London and surrounding areas, particularly those involved in house renovations, period building…
Financial Health
StrongStrong · Growing, Hiring · 6% CAGR over 4y
Location
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Computed from 4 filingsDesigns, manufactures and installs bespoke joinery and fitted furniture including kitchens, wardrobes, staircases, cabinetry, internal and fire-rated doors. Provides custom woodwork and shopfitting…
Serves a mix of B2C and B2B clients, including homeowners, interior designers, property developers and commercial operators such as retailers seeking custom joinery for residential and…
Financial Health
DistressedDistressed
Location
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Computed from 5 filingsProvides shopfitting and joinery installation services for construction and refurbishment projects, including retail and office fit-outs, building maintenance, and interior construction for sectors…
Serves commercial and institutional clients, including retailers, offices, museums, hotels, pharmaceutical firms, education providers, banks, warehouses, restaurants, spas and salons.
Financial Health
HealthyHealthy
Location
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Computed from 3 filingsProvides carpentry and joinery services for the construction industry, including manufacture of bespoke joinery through an in‑house factory and installation on building projects, working as a…
Sells to businesses in the construction industry, particularly leading main contractors and supply-chain partners seeking specialist carpentry and joinery support for projects across the UK.
Financial Health
StableStable · Hiring · 9% CAGR over 2y
Location
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Computed from 5 filingsProvides construction and interior fit‑out services, including refurbishment, carpentry and bespoke joinery. Manufactures and installs fire doors, security‑rated door sets, and combined fire and…
Sells to businesses and organisations needing construction, fit-out and joinery services, particularly in the commercial, education, community, healthcare and residential sectors, with demand for…
Financial Health
HealthyHealthy · -3% CAGR over 4y
Location
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Computed from 4 filingsProvides joinery installation and interior fit-out services for construction projects, delivering high-end installation packages for bespoke manufacturers, fabricators and principal contractors,…
Serves B2B customers in fit-out and construction, including bespoke joinery manufacturers, fabricators and principal contractors needing high-end joinery installation packages.
Financial Health
StrongStrong · Hiring · 33% CAGR over 3y
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Computed from 5 filingsProvides carpentry and joinery services for construction projects, including bespoke woodwork and installation for residential, commercial and public developments. Works as a subcontractor delivering…
Serves main contractors, developers and construction managers delivering large-scale commercial, private residential and public residential developments throughout London.
Financial Health
WeakWeak · -71% CAGR over 4y
Location
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Computed from 3 filingsProvides carpentry and joinery services for construction projects, including installation of doorsets, interior woodwork, and bespoke joinery for commercial, education, leisure, and public sector…
Serves commercial and public-sector construction clients, including developers, main contractors, schools, universities, leisure venues, hotels, retailers and logistics operators.
Financial Health
StableStable · 0% 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 carpentry and joinery services for refurbishment and fit‑out projects, including cabinet making, hardwood door installation, partition wall construction, routering work, and installation of…
Serves London-based commercial and public-sector clients, including schools, hotels, shops and refurbishment project teams needing carpentry and joinery contractors.
Financial Health
HealthyHealthy · 0% CAGR over 4y
Location
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Computed from 5 filingsManufactures purpose‑made timber joinery for residential and commercial properties, including windows, front doors, staircases, cabinetry, handrails, shopfronts, reception desks, timber mouldings and…
Serves architects, property developers, commercial businesses and private property owners in London and the South East, including homes, offices, shopfronts and property developments.
Financial Health
HealthyHealthy · Growing, Hiring · 3% CAGR over 4y
Location
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Computed from 5 filingsProvides contract carpentry and joinery services for residential construction projects, including first and second fix carpentry, installation of doors, windows, flooring, fitted wardrobes and…
Serves B2B property developers and major contractors delivering multi-phase residential new-build and refurbishment projects, especially housing developments across London and the Home Counties.
Financial Health
HealthyHealthy · 0% CAGR over 4y
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Computed from 5 filingsProvides specialist joinery and carpentry services, including design, manufacture and installation of bespoke woodwork for commercial interior fit-outs and high-end residential projects, as well as…
Serves commercial fit-out contractors, developers, architects and professional teams on commercial interiors, refurbishments and high-end residential projects, with additional clients in leisure,…
Financial Health
StableStable · 0% CAGR over 4y
Location
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Provides commercial and domestic carpentry and joinery services, including first and second fix carpentry, roof construction, door set installation, kitchens, flooring, bespoke joinery, and passive…
Serves property developers, contractors and commercial site clients, as well as homeowners needing carpentry, joinery and passive fire protection support across London and the South East.
Financial Health
N/AN/A
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Computed from 5 filingsProvides carpentry and joinery contracting services to the construction and property development sectors. Acts as a subcontractor on building projects, delivering installation and finishing of timber…
Serves main contractors, construction firms and property developers delivering large-scale construction projects in London, particularly projects with formal specifications, programmes and…
Financial Health
StableStable · Profitable · -5% CAGR over 4y
Location
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Computed from 3 filingsProvides carpentry and joinery contracting services for residential and commercial construction projects. Undertakes roofing carpentry, first and second fix work, kitchen installation, timber…
Serves main contractors, property developers and construction firms delivering residential and commercial developments in South East England, including larger or complex schemes.
Financial Health
StableStable · 0% CAGR over 2y
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Computed from 5 filingsProvides carpentry and joinery services including design and manufacture of bespoke timber staircases, balustrades and handrails. Offers CNC machining and precision wood cutting, custom joinery…
Serves trade customers, builders, contractors and private clients in London involved in new-build, restoration and custom joinery projects.
Financial Health
HealthyHealthy · -4% CAGR over 4y
Location
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Computed from 5 filingsProvides joinery fit-out and installation services for residential and hospitality developments, including installation of bespoke furniture, kitchens, wardrobes, carpentry and flooring. Also offers…
Serves developers, contractors and project teams delivering luxury hotel and high-end apartment fit-out projects across London and the UK.
Financial Health
HealthyHealthy
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Computed from 4 filingsDesigns and manufactures bespoke joinery and carpentry products for residential projects, including timber staircases, internal and front doors, sash and casement windows, fitted wardrobes,…
Serves a mix of homeowners, property renovators and commercial construction clients in London, including house projects and larger civil engineering or infrastructure-related projects.
Financial Health
StrongStrong · Hiring · 5% CAGR over 4y
Location
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Computed from 5 filingsDesigns and manufactures bespoke timber staircases from hardwood and softwood for residential and commercial properties. Also produces joinery products including internal and external doors, windows,…
Sells to residential and commercial property customers needing bespoke timber staircases and joinery, particularly for new-build and period properties, with delivery across the Home Counties and…
Financial Health
WeakWeak · -20% CAGR over 4y
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Computed from 5 filingsProvides dry lining and partitioning, suspended ceiling systems, glazed partitions, fire door installation and carpentry for commercial and residential construction projects, including office…
Serves commercial and residential property clients, main contractors and office fit-out/refurbishment firms across London, Surrey, Berkshire and surrounding areas, including schools and…
Financial Health
HealthyHealthy · -16% CAGR over 4y
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Computed from 5 filingsProvides interior fit-out and building services for commercial projects, including installation of ceilings, partitions, glazing, doors and joinery, as well as fire door installation and maintenance…
Serves commercial fit-out contractors and workplace interiors project teams delivering office and commercial building projects, including firms needing specialist subcontractors for compliant…
Financial Health
StrongStrong · Growing, Hiring · 14% CAGR over 4y
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Computed from 5 filingsDesigns, manufactures and installs bespoke joinery including custom kitchens, fitted wardrobes, doors, bathrooms and made‑to‑measure furniture. Provides design consultation, CNC machining, and…
Serves residential homeowners and commercial clients across London seeking bespoke joinery, including custom kitchens, wardrobes, bathrooms, doors and made-to-measure furniture.
Financial Health
StableStable · -1% CAGR over 4y
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Computed from 5 filingsProvides joinery installation services, fitting bespoke woodwork and interior joinery for building projects. Supplies teams of professional joinery fitters to install cabinetry, panelling and other…
Serves clients and project teams in London and the Cotswolds requiring bespoke joinery installation, particularly organisations coordinating multiple sites and short lead-time fitting schedules.
Financial Health
StrongStrong · Growing, Hiring · 57% CAGR over 4y
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Computed from 5 filingsManufactures and installs bespoke timber windows and doors, including sash, casement and heritage designs. Provides survey, design, manufacture, installation and restoration services for period,…
Serves homeowners, architects and contractors involved with period, conservation and listed properties and high-end new-build homes across London and the Home Counties.
Financial Health
StableStable · Hiring · 5% CAGR over 4y
Location
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Computed from 5 filingsProvides carpentry and joinery services for residential and commercial construction projects, including first and second fix carpentry, traditional and truss roofing, external cladding, commercial…
Serves construction firms, property developers and main contractors delivering residential developments and commercial fit-outs, particularly multi-home schemes requiring compliant subcontractor…
Financial Health
StrongStrong · Growing, Hiring · 7% CAGR over 4y
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Computed from 5 filingsDesigns, manufactures and installs bespoke joinery for residential and commercial projects. Produces custom cabinetry, fitted furniture and interior woodwork, managing projects from technical review…
Serves homeowners, property developers, interior designers and commercial fit-out clients in London undertaking medium to large high-end residential and commercial projects.
Financial Health
StrongStrong · Hiring · 14% CAGR over 4y
Location
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Computed from 5 filingsProvides specialist carpentry and joinery contracting services for construction projects. Designs, manufactures and installs bespoke contract furniture and casegoods, and delivers interior fit‑out…
Serves main contractors, property developers and hotel brands in the UK hospitality, residential, student accommodation and retail construction sectors.
Financial Health
DistressedDistressed
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Computed from 5 filingsProvides interior construction and joinery services for residential, retail, and commercial properties. Delivers design-and-build and turnkey fit-out projects, including bespoke joinery, shopfitting,…
Serves homeowners, hotels and commercial property owners, with a B2B focus on retail, leisure, health, education and shop-fitting clients in and around London.
Financial Health
StableStable · Hiring · 11% CAGR over 4y
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Computed from 2 filingsDesigns, manufactures and installs bespoke kitchens, wardrobes and fitted interior furniture. Manages projects from specification and design through construction and installation, working with…
Serves homeowners and residential property clients in London, alongside B2B buyers and partners such as main contractors, architects, interior designers and property developers.
Financial Health
StrongStrong · Growing · 0% CAGR over 1y
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Computed from 4 filingsDesigns and manufactures bespoke timber joinery for residential and commercial projects, including box sash windows, doors, staircases, fitted kitchens, fitted furniture and shop fronts, with…
Serves homeowners, landlords, property developers and retail businesses commissioning bespoke timber joinery for residential interiors and commercial shop fronts.
Financial Health
StableStable · -7% CAGR over 3y
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Computed from 5 filingsManufactures bespoke kitchens and furniture and provides joinery, carpentry, and upholstery services. Designs and produces wardrobes, media walls, reception desks, banquette seating, storage units,…
Serves homeowners, retail businesses, heritage and cultural venues such as listed museums and art galleries, and commercial office fit-out clients.
Financial Health
HealthyHealthy · Hiring · 14% CAGR over 4y
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Computed from 5 filingsProvides interior refurbishment and fit-out services for commercial and residential spaces, including bespoke joinery, fitted furniture and kitchens, partition walls, ceilings, flooring and…
Serves B2B and domestic customers, including main contractors, interior fit-out companies, contract office furniture suppliers, interior designers, homeowners, and clients in commercial, residential,…
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HealthyHealthy · 0% CAGR over 4y
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Computed from 3 filingsProvides bespoke joinery and carpentry services, including manufacture and installation of custom furniture, interior fit-outs, wooden flooring, and solid surface worktops. Also installs and…
Serves large companies, offices, hotels, other businesses and individual homeowners across the UK, covering both commercial and residential customers with projects from large buildings to small…
Financial Health
StableStable · 0% CAGR over 2y
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Computed from 5 filingsDesigns, manufactures and installs bespoke joinery and cabinetry for residential and commercial interior projects, including custom doors, fitted furniture and architectural woodwork, providing…
Serves a mix of B2B and private clients, including interior designers, property developers, commercial fit-out clients and owners of high-end homes, penthouses and residential properties.
Financial Health
StrongStrong · Growing, Hiring · 41% CAGR over 4y
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Computed from 5 filingsProvides construction and refurbishment services, interior architecture and design, and bespoke joinery. Produces custom furniture, doors, staircases and architectural woodwork, and undertakes…
Serves a mix of private homeowners, property developers and high-end commercial clients seeking luxury residential and commercial construction, refurbishment, interiors and bespoke joinery.
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DistressedDistressed
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Computed from 3 filingsManufactures bespoke joinery and interior fittings from its workshop, producing custom wood and multi‑material elements for commercial interiors, including toilet cubicles and fitted features used in…
Serves B2B and public-sector customers, including retailers, universities, NHS organisations and travel and leisure operators commissioning bespoke interior, joinery, building or shopfitting projects.
Financial Health
StrongStrong · Growing, Hiring · 22% CAGR over 2y
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Computed from 5 filingsProvides labour-only carpentry subcontracting for residential construction projects, working mainly on new-build housing and apartment developments. Supplies carpenters to carry out structural and…
Serves B2B housebuilders and property developers on new-build residential developments, particularly projects comprising houses and flats.
Financial Health
HealthyHealthy · -2% CAGR over 4y
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Computed from 4 filingsDesigns, manufactures and installs bespoke joinery and custom furniture for residential and commercial projects. Works with architects, designers and contractors to produce fitted interiors,…
Serves contractors, developers and project managers on commercial projects, plus architects, designers and homeowners commissioning bespoke residential interiors.
Financial Health
HealthyHealthy · Hiring · 39% CAGR over 3y
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Computed from 5 filingsManufactures and installs bespoke windows, doors, sliding and bi‑fold systems, conservatories and glass roofs in timber, aluminium and uPVC. Also designs and supplies made‑to‑measure kitchens,…
Serves homeowners, residential renovators, trade customers and commercial buyers in London, Kent and South East England needing made-to-measure glazing and fitted-furniture orders.
Financial Health
WeakWeak · -9% CAGR over 4y
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Computed from 5 filingsProvides carpentry and joinery contracting for residential and commercial construction projects, including roofing, first and second fix carpentry, kitchen installation, timber flooring, decking and…
Serves property developers, main contractors and construction clients delivering residential and commercial developments in the South East, particularly larger or complex schemes.
Financial Health
HealthyHealthy · 0% CAGR over 4y
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How London Joinery companies work and how to sell to them
What they do
London joinery businesses earn through project margin on manufacture-and-install packages, day-rate site carpentry, remedial works and occasional maintenance retainers. Pricing usually combines material cost, labour, preliminaries, access, delivery and risk allowances; larger packages may use measured tenders or bills of quantities, while domestic refurbishment is often quoted as fixed-price scopes with staged deposits. Some workshops make margin on bespoke fitted furniture, staircases, doorsets and partitions; installation-only crews sell labour capacity to contractors. Cash conversion can be uneven because materials are bought early and payment depends on valuation cycles, certification and defect close-out.
Who they sell to
Most sell to main contractors, fit-out businesses, developers, architects, landlords, estates teams and private residential clients. The named buyer is often a quantity surveyor, contracts manager, project manager, architect, facilities manager or homeowner, depending on the route to market. Sales cycles can be short for repairs and small works, but longer for tendered packages where drawings, specifications, site visits, programme dates and insurance documents are reviewed before award. Procurement usually moves through invitation-to-tender lists, approved subcontractor panels, architect referrals and repeat contractor relationships; public-sector and estates work may involve frameworks or formal RFP processes.
What they buy
Most London joinery firms tend to spend on estimating, take-off, CAD and BIM drafting, project accounting, CRM, job scheduling, document control, mobile site reporting, compliance evidence storage and health-and-safety management. Workshops may also buy machinery servicing, dust extraction, timber supply, fire-rated materials, ironmongery, vehicles, storage, insurance, waste disposal and access equipment. Office-side requirements include bookkeeping, payroll, tax advice, contract review, debt recovery, recruitment, apprenticeship support, search marketing and completed-project photography. Sellers should distinguish between workshop-led manufacturers, which care about production flow and material yield, and site-labour subcontractors, which care more about allocation, timesheets and contractor paperwork.
Why and how to sell to them
Joinery buyers tend to evaluate vendors when a package win exposes administrative gaps, a contractor tightens evidence requirements, payment delays put pressure on cashflow, or a new workshop, van fleet or project manager changes operating capacity. Common pain points include late design changes, variation capture, snagging, site access, document control, margin erosion and proof that specified materials were installed. Outbound messages usually land better when they attach to a live commercial pressure: fewer rejected valuations, faster remedial sign-off, clearer material traceability, cleaner handover packs or less time spent reconciling labour and materials after a job has moved on.
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
How many joinery companies are there in London?
What counts as a joinery company in this list?
Which are the largest joinery companies in London?
What do joinery companies in London actually do?
How does London joinery compare internationally?
How is this list built and how fresh is the data?
How big are the typical joinery companies in London?
Are these mostly new or established joinery companies?
What SIC codes does this use?
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