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Property Companies in Middlesbrough: 1,523 Active Firms (2026)
Property companies in Middlesbrough buy, sell, let, manage and advise on residential and commercial real estate across the Tees Valley.
Buying centres in Middlesbrough tend to sit with owner-occupiers, landlords, developers, commercial occupiers and professional advisers rather than a single procurement function. Work ranges from residential sales and lettings to commercial premises search, block or portfolio management, auctions and land advisory. Engagements are usually relationship-led and local: valuation, instruction, tenancy, management and disposal workflows depend on neighbourhood knowledge, access to buyers or tenants, and familiarity with Tees Valley transaction patterns. The cohort spans lean asset-holding vehicles, small specialist agencies and mid-market operators with enough staff to separate sales, lettings, compliance and property-management activity.
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Middlesbrough has 1,523 actively trading property companies, giving the town a sizeable local services and asset-operator base rather than just a handful of agencies. Reported headcount totals 401 people, although staffing in this sector often understates operating scale where directors, contractors and asset-holding structures sit outside conventional employee counts. The scale profile remains tilted towards smaller local firms: 9 companies report turnover above £5M, while 418 were incorporated since 2022. That newer formation activity points to a market still renewing around landlord services, development vehicles, agency work and transaction-support roles across the Tees Valley.
Estate agency activity sits within a defined compliance perimeter. Businesses carrying out estate-agency work must register with HMRC for anti-money-laundering supervision before trading, and government guidance treats trading without registration, or after cancelled registration, as a criminal offence. The perimeter can cover residential, commercial and online estate agencies, auctioneers, land agents, relocation and property-finding services, and some lettings or property-management businesses where they also offer estate-agency services. Lettings agents and property managers in England must also belong to a government-approved redress scheme. Separate FCA oversight can apply where a property business undertakes regulated consumer-finance activity.
Local property operators appear likely to remain split between relationship-led advisory businesses and leaner asset vehicles. Compliance work tends to favour firms with repeatable onboarding, client-money, redress and anti-money-laundering processes, while smaller agencies may face more pressure from documentation, identity checks and digital transaction workflows. The early-commercial weight of the cohort suggests continued churn, especially among single-site agencies and development entities tied to particular projects. Larger local operators may benefit where landlords, investors and commercial occupiers prefer broader coverage across sales, lettings and management, but consolidation is more likely to be gradual than abrupt.
1,523
Active firms
2026
418
Newer firms
incorporated since 2022
9
£5M-plus firms
reported turnover above £5M
Key facts
About 1% of the trading cohort reports turnover above £5M (9 of 1,523 firms) — the rest sits below that revenue band.
27% of the cohort was incorporated since 2022 (418 firms), so a sizeable share is in its first few filing cycles.
Estate agency activity under section 1 of the Estate Agents Act 1979 must be registered with HMRC for anti-money-laundering supervision before trading.
GOV.UK states that trading as an estate agency business without HMRC registration, or after registration is cancelled, is a criminal offence.
Lettings agents and property managers in England have needed to join a government-approved redress scheme since 1 October 2014.
The home-buying and selling process supports around 1.2 million UK residential property transactions each year and contributes around £100 billion annually to the UK economy.
GOV.UK's 2025 consultation put the UK process at an average of 120 days after offer acceptance, with around 1 in 3 transactions failing.
Top Middlesbrough Property companies
Magnum Properties (NE) Limited
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides estate agency services for residential and commercial property, including sales, lettings, property management, valuations, and marketing of retail, industrial and office premises,…
Serves homeowners, landlords, tenants, property investors and business owners seeking residential or commercial property in Teesside, including Middlesbrough, Hartlepool, Stockton-on-Tees, Redcar,…
Financial Health
HealthyHealthy
Location
Michael Poole Property Consultants Limited
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsProvides residential estate agency and lettings services, including property sales, rentals, valuations and marketing. Also advises landlords and tenants, manages rental properties, and markets new…
Serves residential property buyers, sellers, tenants and landlords, plus new-home buyers and land clients, across Teesside, Middlesbrough, Stockton and Redcar.
Financial Health
StrongStrong · Growing · 0% CAGR over 2y
Location
CEI Properties Limited
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsFinancial Health
WeakWeak · Hiring · 41% CAGR over 2y
Location
NS Lettings Ltd
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides estate agency and lettings services including marketing residential properties for sale and rent, tenant sourcing, property management for landlords, valuations, and guidance for buyers,…
Serves consumers and property investors in the Teesside area, including homebuyers, sellers, renters, landlords and tenants seeking residential sales and lettings support.
Financial Health
WeakWeak · Hiring · 26% CAGR over 4y
Location
THIRTEEN HOMES LIMITED
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsDevelops and sells new-build residential properties, including shared ownership homes. Manages housing developments, oversees construction and completion of housing units, and markets properties to…
Sells to individual homebuyers seeking affordable new-build and shared ownership properties across the North East and Yorkshire, including first-time buyers and movers looking for 2-5 bedroom homes.
Financial Health
WeakWeak
Location
Renoject Limited
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsSources and manages residential property investment opportunities including buy‑to‑let properties, HMOs, flips and development projects. Provides investor support covering deal sourcing,…
Serves private property investors, from first-time buyers to portfolio landlords, seeking buy-to-let, HMO, flip and development opportunities in the North East.
Financial Health
StrongStrong · -33% CAGR over 1y
Location
HORIZON STAYS MANAGEMENT LTD
Trajectory
4y · 2022–NowFinancial sub-scores
Computed from 4 filingsProvides serviced accommodation and corporate lets, offering furnished apartments and houses for short- and extended-stay bookings. Manages a portfolio of rental properties and offers accommodation…
Serves businesses arranging workforce accommodation, corporate lodgers, business professionals and private individuals needing short-term or extended stays across North East England, including…
Financial Health
WeakWeak · Hiring · 71% CAGR over 3y
Location
SP2 PROPERTIES LIMITED
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
StrongStrong · Hiring · 10% CAGR over 4y
Location
Ashbrookes Design & Build Limited
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides property development and design‑and‑build services, including planning, architectural design, site preparation and construction. Delivers new‑build housing, extensions, refurbishments and…
Serves homeowners, property investors, developers and public sector organisations in North East England with planned construction, extension, refurbishment and accommodation development projects.
Financial Health
HealthyHealthy
Location
TREEBRIDGE DEVELOPMENT LIMITED
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsFinancial Health
HealthyHealthy · 0% CAGR over 2y
Location
CLEVELAND PROPERTY LIMITED
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
DistressedDistressed
Location
Chancery Investments (Ne) Ltd
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
HealthyHealthy · 0% CAGR over 4y
Location
Teesside Properties (North East) Limited
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
HealthyHealthy · Hiring · 38% CAGR over 5y
Location
Chestnut Property Letting Limited
Trajectory
1y · 2025–NowFinancial Health
Insufficient historyInsufficient history
Location
BRECKON HILL MOTORS LIMITED
Trajectory
5y · 2019–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
StableStable · -13% CAGR over 5y
Location
Blackstone NE Ltd
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
StrongStrong · Growing · 0% CAGR over 4y
Location
Hunter House Property Limited
Trajectory
1y · 2025–NowFinancial Health
Insufficient historyInsufficient history
Location
PH Estate Agents Limited
Trajectory
4y · 2022–NowFinancial sub-scores
Computed from 4 filingsProvides estate agency services including residential and commercial property sales and lettings. Lists and markets properties, conducts property valuations, and manages rental properties for…
Serves homeowners, first-time buyers, property investors, landlords, tenants and commercial property clients across Cleveland and North Yorkshire, addressing residential and commercial property…
Financial Health
HealthyHealthy · Hiring · 39% CAGR over 3y
Location
COLLIER ESTATES LTD
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsProvides estate agency services for residential and commercial property, including property sales, lettings, marketing, valuations, and buyer and tenant search tools through an online property…
Serves homeowners, buyers, landlords, tenants and commercial property clients in Hartlepool, Wynyard and Teesside seeking residential or commercial sales and lettings support.
Financial Health
StrongStrong · Growing, Hiring · 24% CAGR over 4y
Location
ROSEBERRY NEWHOUSE SALES LIMITED
Trajectory
1y · 2025–NowProvides residential estate agency services, including property sales, lettings, and rentals. Offers property marketing, buyer and tenant searches, and online valuation tools, supporting homeowners,…
Serves homeowners, property sellers, landlords, buyers and tenants in Stokesley, Ingleby Barwick, Yarm, Norton, Teesside and surrounding areas.
Financial Health
Insufficient historyInsufficient history
Location
INGLEBY HOMES LTD
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides residential estate agency services including property sales, lettings, and marketing. Offers property valuations, tenant sourcing, and landlord services ranging from let-only arrangements to…
Serves homeowners looking to sell, residential landlords with single properties or managed portfolios, and local tenants and homebuyers across Ingleby Barwick and the surrounding areas.
Financial Health
WeakWeak · -3% CAGR over 4y
Location
Leapfrog Lettings Limited
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides residential estate agency and lettings services, including marketing properties for sale and rent, property valuations, buyer and tenant search, and landlord services such as tenant sourcing…
Serves homeowners, property sellers, buyers, landlords and tenants in Saltburn, Skelton, Marske, Redcar, Guisborough and surrounding East Cleveland villages.
Financial Health
StrongStrong · Hiring · 14% CAGR over 4y
Location
SELECTIV ESTATE AGENTS LIMITED
Trajectory
1y · 2025–NowProvides residential estate agency services including property sales, lettings and valuations. Markets homes, manages property listings, and assists buyers, sellers, landlords and tenants with…
Serves B2C residential property customers, including homebuyers, sellers, landlords and tenants, with a clear focus on people seeking to buy, rent, let or sell homes in Guisborough, Redcar, Teesside…
Financial Health
Insufficient historyInsufficient history
Location
HELLENS RETAIL (SPENNYMOOR) LTD
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsAcquires and regenerates brownfield land for residential, retail and mixed‑use developments. Provides planning, civil engineering and construction services, develops affordable housing, and manages a…
Serves businesses seeking office, industrial and retail premises, housebuilders, affordable-housing residents, and public/regeneration partners across the North East, Tees Valley and Yorkshire.
Financial Health
StableStable · -68% CAGR over 4y
Location
CARVER COMMERCIAL LTD
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides commercial property agency services including sales, lettings, and property marketing. Offers property valuations, commercial property search, and advice for landlords, tenants, and…
Serves B2B customers including commercial property owners, landlords, landowners, developers, investors and business occupiers, alongside parties looking to buy, sell, lease or value commercial…
Financial Health
StrongStrong · Hiring · 8% CAGR over 4y
Location
Jomast
Develops and invests in residential, commercial and mixed-use property projects, including brownfield regeneration schemes. Acquires land, manages assets, and delivers redevelopment and construction…
Serves B2B and public-sector buyers involved in property and regeneration, including commercial occupiers, investors, landowners, local authorities and development partners. Targets organisations…
Location
WYNYARD PARK VENTURES LLP
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsDevelops and manages a private residential estate offering serviced self‑build housing plots, new homes built by partner housebuilders, and associated retail and community amenities, including…
Serves affluent private homebuyers and self-builders seeking luxury homes or serviced plots within a gated Tees Valley estate, alongside housebuilders involved in new-home development.
Financial Health
HealthyHealthy
Location
Denham Properties (NE) Limited
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides residential estate agency services including property sales, lettings, tenant sourcing, valuations and property management. Markets homes for sale or rent and supports landlords and…
Serves consumers in and around Darlington seeking to buy, sell or rent residential property, and landlords needing residential lettings and property management support.
Financial Health
HealthyHealthy · 0% CAGR over 4y
Location
Hall Properties (N/E) Ltd
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides estate agency services for residential property, including property sales, lettings, tenant and landlord services, rental property management, and property valuations. Operates online…
Serves homeowners, property sellers, buyers, tenants, landlords and residential property investors in Darlington, Newton Aycliffe, County Durham and Teesside, with some commercial property clients.
Financial Health
StableStable · Hiring · 5% CAGR over 4y
Location
R Parker Property Ltd
Trajectory
4y · 2022–NowFinancial sub-scores
Computed from 4 filingsProvides residential letting and property management services for landlords, including tenant sourcing, rent collection and property maintenance coordination. Also markets rental properties and…
Serves both B2B and B2C customers: residential landlords seeking letting and property management support, and prospective tenants looking for rental properties across a range of budgets and…
Financial Health
DistressedDistressed
Location
Lettings Express UK Limited
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides residential letting and property management services for landlords, including tenant sourcing, property marketing, rental listings, viewings, rent collection, and coordination of property…
Serves private landlords, property owners and residential tenants, with an emphasis on Teesside and the North East. Targets both experienced and first-time landlords, plus renters seeking affordable…
Financial Health
WeakWeak · -14% CAGR over 4y
Location
Northgate Estates (NE) Limited
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides residential estate agency services including property sales, lettings, auctions, and property management. Markets homes, arranges valuations, lists properties for sale or rent, and supports…
Serves residential property buyers, sellers, tenants and landlords in County Durham and Teesside, including Darlington, Newton Aycliffe and Billingham.
Financial Health
StableStable · Hiring · 9% CAGR over 4y
Location
Parker Stag Ltd
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides estate agency and lettings services for residential property, including property sales, rentals, auctions, and property management. Also offers contractor accommodation, landlord and tenant…
Serves residential property sellers, buyers, landlords, tenants and contractors seeking accommodation, primarily in the Redcar and Cleveland property market.
Financial Health
WeakWeak · 0% CAGR over 4y
Location
Ingleby Estates Ltd
Trajectory
4y · 2022–NowFinancial sub-scores
Computed from 4 filingsProvides estate agency services including residential property sales and lettings, commercial property sales, and property valuations. Markets properties, arranges viewings, and supports transactions…
Serves homeowners, buyers, landlords, tenants and commercial property clients seeking sales, lettings and mortgage support in Saltburn, East Cleveland and surrounding areas.
Financial Health
StableStable · -18% CAGR over 3y
Location
Poulter Property Services Ltd
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides furnished house-share accommodation and rooms to rent for individuals, couples, and contractors. Manages shared houses and rental properties, offers long‑term tenancies, and operates schemes…
Serves private renters, individuals and couples seeking house shares or long-term tenancies, contractors needing short-term accommodation in Redcar, and local landlords interested in guaranteed rent…
Financial Health
StrongStrong · Growing, Hiring · 11% CAGR over 4y
Location
Addison Developments (NE) Ltd
Trajectory
4y · 2022–NowFinancial sub-scores
Computed from 4 filingsProperty developer that designs and builds bespoke residential housing developments, including detached houses and bungalows, and sells newly built homes on small-scale developments for private…
Serves private homebuyers seeking luxury new-build houses and bungalows on bespoke developments in the North East, including buyers looking around Kirklevington, Yarm and Leeming Bar.
Financial Health
StrongStrong · Growing · 0% CAGR over 3y
Location
BUSSEY & ARMSTRONG PROJECTS LIMITED
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsDevelops and builds residential housing developments, designing and constructing new‑build houses and marketing them for sale. Provides property sales listings, viewing arrangements, and information…
Serves consumers seeking new-build four- and five-bedroom detached homes in Darlington and the North-East, including movers needing sales support and residential tenants.
Financial Health
StableStable · 0% CAGR over 2y
Location
Wynyard Estate Services Limited
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsProvides estate management services for a residential development, including administration of estate rent charges, debt recovery, maintenance coordination, resident support, issue reporting, and…
Serves current and prospective residents and homeowners within the Wynyard Estate, particularly families and executive housing occupants seeking private-estate living and resident account support.
Financial Health
StableStable · Hiring · 112% CAGR over 2y
Location
ROCKWILL HOMES LTD
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsDevelops and sells newly built residential properties, offering a range of house designs within housing developments and guiding buyers through the purchasing process from reservation to completion.
Serves private homebuyers seeking luxury new-build houses in Eaglescliffe, including individuals and families comparing specific house types within the Hunters Rest development.
Financial Health
StableStable · -75% CAGR over 4y
Location
Harper and Co Estate Agents Ltd
Trajectory
4y · 2022–NowFinancial sub-scores
Computed from 4 filingsFinancial Health
StableStable · Hiring · 19% CAGR over 3y
Location
Westpark Property Company Limited
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
HealthyHealthy · -7% CAGR over 4y
Location
My Property Box Ltd
Trajectory
4y · 2022–NowFinancial sub-scores
Computed from 4 filingsProvides estate agency and letting services, marketing residential properties for sale and rent. Manages rental properties for landlords including HMOs and student accommodation, handles tenant…
Serves property landlords, HMO and student landlords, residential sellers, property investors, tenants, students and homebuyers across Darlington, Newcastle, Middlesbrough and nearby North East areas.
Financial Health
StableStable · Hiring · 7% CAGR over 3y
Location
Sillars Properties Limited
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsProvides estate agency and property management services, including sourcing investment properties, property sales, residential lettings, tenancy management, valuations, and maintenance reporting for…
Serves residential property investors, landlords, property sellers and tenants across Darlington, Teesside, Durham, Tyne & Wear and the wider North East.
Financial Health
StrongStrong · Hiring · 22% CAGR over 2y
Location
STEVE LISTER DEVELOPMENTS LIMITED
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsProvides property development, design and construction services for residential and commercial projects, including bespoke house building, renovations and project delivery. Also offers property…
Serves homeowners, prospective buyers and renters, and commercial property clients in Stockton-on-Tees and beyond, including residential and business customers with property development or…
Financial Health
StableStable · 0% CAGR over 2y
Location
D & G Surveying Services Limited
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsProvides chartered surveying services for commercial and residential real estate, including property valuations, SIPP and pension fund valuations, estate agency sales and lettings, rent reviews,…
Serves businesses and consumers involved in commercial and residential property, including landlords, tenants, property investors, developers, and SIPP or pension fund holders, with emphasis on the…
Financial Health
StrongStrong · 66% CAGR over 1y
Location
Wentworth Estates Property Management Ltd
Trajectory
5y · 2019–NowFinancial sub-scores
Computed from 5 filingsProvides residential property lettings and management services, including tenant sourcing, rent management, maintenance reporting and landlord compliance support. Lists rental properties and assists…
Serves a mix of B2C and B2B customers, primarily residential tenants seeking rental homes, landlords needing lettings and property management, and property owners or investors looking to buy, sell or…
Financial Health
StrongStrong · Hiring · 22% CAGR over 5y
Location
ASTRAL PARK MANAGEMENT COMPANY LIMITED
Trajectory
4y · 2023–NowProperty developer and investor that develops and manages commercial business space and residential housing. Builds new homes and undertakes commercial property development projects, providing…
Serves businesses seeking commercial premises and commercial opportunities, alongside homebuyers looking for new-build properties in the North of England.
Financial Health
Insufficient historyInsufficient history
Location
Mandale Apartments 2 Limited
Trajectory
3y · 2022–NowFinancial sub-scores
Computed from 3 filingsProperty development company that develops and refurbishes residential apartment buildings and mixed‑use schemes, converting offices and industrial buildings into flats and constructing new‑build…
Serves private renters and homebuyers seeking apartments and homes, alongside some commercial occupiers and operators for office, retail, trade park and student accommodation schemes.
Financial Health
WeakWeak
Location
MODE HOMES LIMITED
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProperty developer that designs and builds new‑build residential housing developments, offering three‑ to five‑bedroom houses for sale. Provides show homes, site plans and buyer guidance for…
Sells to individual homebuyers and families seeking new-build 3, 4 and 5-bedroom homes in the High Leven area, near Yarm and Ingleby Barwick.
Financial Health
HealthyHealthy
Location
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How Middlesbrough Property companies work and how to sell to them
What they do
Middlesbrough property businesses usually earn through commission, retainers, management fees, rent collection fees, valuation work, auction fees, development margins or rental income from owned assets. Residential agencies tend to monetise instructions and lettings activity; commercial advisers lean more on occupier search, disposals, lease advisory and landlord representation. Property managers price around recurring management of blocks, portfolios or tenancies, with extra income from compliance administration and maintenance coordination. Asset-holding and development vehicles have a different shape: fewer day-to-day clients, more exposure to rent, financing costs, planning risk and sale proceeds.
Who they sell to
Buyers are usually homeowners, landlords, tenants, developers, commercial occupiers, investors and professional advisers working around a transaction. The decision-maker is often an owner-manager, landlord, finance director, operations lead, estates manager or property investor rather than a formal procurement team. Residential instructions can be won through reputation, valuation visits and local search visibility, while commercial and development work is more relationship-led and may involve advisers, lenders and solicitors. Sales cycles vary by workflow: lettings and single-property instructions can move quickly, while commercial premises searches, portfolio management and development-linked advisory work tend to take longer.
What they buy
Most property firms tend to spend on tools and services that reduce friction in instruction, onboarding, marketing, tenancy administration and portfolio control. Common categories include CRM, lettings and property-management software, client-accounting support, anti-money-laundering checks, identity verification, document automation, e-signature, call handling, website management, search marketing, photography, floorplans, property data and analytics. Larger local operators may also buy cyber security, cloud storage, HR support, recruitment, fleet or mileage administration, professional indemnity cover, legal support and outsourced bookkeeping. Asset-heavy firms are more likely to need finance, valuation, insurance, facilities management and contractor-management services.
Why and how to sell to them
Buying intent tends to appear when a firm adds managed properties, opens another branch, takes on commercial instructions, changes senior staff, absorbs a portfolio or tightens compliance after an HMRC or redress-related review. Pain points are usually practical: slow identity checks, duplicated forms, thin audit trails, void periods, arrears, contractor delays, missed viewing follow-up and poor visibility across sales and lettings pipelines. Outbound works better when it maps to a live workflow rather than a generic efficiency claim. Messages should anchor on faster onboarding, cleaner records, reduced manual chasing, better landlord reporting or clearer transaction oversight across Middlesbrough and the wider Tees Valley.
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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