Wind Energy Companies in London: 79 Active Firms (2026)
Wind energy companies in London develop, finance, operate and service wind power projects for UK and international markets.
Buying centres cluster around infrastructure investors, renewable-power asset owners, project developers, engineering contractors and corporate energy buyers. London-based teams tend to sell business-to-business services into mid-market and enterprise customers, with some public-sector or quasi-public procurement where grid, port or local-authority interests are involved. Engagements usually look like project-finance support, asset-management mandates, owner’s-engineer work, maintenance packages or specialist supply-chain advisory, rather than short-cycle small-business purchasing. The commercial relationship is therefore diligence-heavy: buyers expect track record, insurance cover, health-and-safety capability and a clear view of construction, operational and offtake risk before committing.
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London has 79 actively trading wind-energy companies in this list, reflecting a capital-markets and advisory centre more than a pure operating-base geography. The cohort includes developers, asset managers, service providers and engineering specialists that can address UK projects while selling into international wind markets from a London headquarters or commercial office. Reported headcount totals 671 people, which points to a market made up largely of specialist teams rather than labour-intensive manufacturing sites. For researchers, revenue and project role matter more than employee count when separating operational wind exposure from broader clean-energy consultancy.
Wind-power work is shaped less by entity-level authorisation than by project permissions, grid access, offtake arrangements and construction safety obligations. London-based advisers and asset managers typically sit close to contractual risk allocation: planning conditions, connection milestones, consented operating limits, land or seabed rights, and obligations passed down to engineering and maintenance contractors. Cross-border work adds jurisdictional due diligence, currency exposure and local procurement rules, while UK projects remain sensitive to connection queues and the timing of public and private power-purchase processes.
Future expansion appears more likely to come from commercial specialisation than from a broad wave of generalist entrants. London firms with finance, advisory and asset-management capabilities tend to benefit when project sponsors need capital structuring, contract negotiation and operating oversight. Service-only teams may face more pressure as procurement matures and buyers ask for evidence of safety performance, delivery history and insurance capacity. Consolidation could occur around portfolios, maintenance capability and advisory relationships, but the sector still looks fragmented, with many businesses closer to specialist project partners than integrated energy groups.
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
79
Active firms
2026
11
Over £5M revenue
larger revenue businesses
19
New since 2022
recent incorporations
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Key facts
About 13% of the trading cohort reports turnover above £5M (11 of 79 firms) — the rest sits below that revenue band.
24% of the cohort was incorporated since 2022 (19 firms), so a sizeable share is in its first few filing cycles.
London’s wind energy segment is weighted towards project ownership, development, finance, operations and specialist services rather than turbine manufacturing.
Wind revenue can sit in asset-owning or project-specific entities, while engineering, construction and maintenance work is contracted across wider supply chains.
The capital’s role in wind energy is closely linked to renewable-generation capital and asset-management structures serving UK and overseas assets.
Top London Wind Energy companies
Financial sub-scores
Computed from 5 filingsDevelops, finances, builds and operates offshore wind farms. Provides end‑to‑end project development including site development, engineering and design, procurement, construction, corporate power…
Sells to large corporate electricity buyers through corporate PPAs and serves energy-sector partners and investors involved in offshore wind markets across Europe, North America and Asia-Pacific.
Financial Health
StrongStrong
Location
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Develops, owns, and operates renewable energy projects, primarily onshore wind farms, and expanding into solar power. Manages the development, construction, and operation of wind and solar energy…
Serves electricity buyers and energy markets in the UK and Scandinavia, including utilities, grid operators and corporate power users seeking renewable electricity from wind and solar projects.
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Computed from 5 filingsOriginates and invests in the development and long-term management of offshore wind power projects. Partners with developers and investors to finance, develop and manage utility-scale offshore wind…
Targets strategic partners, developers and owners involved in large-scale offshore wind projects globally, including opportunities in Europe, North America and Asia Pacific.
Financial Health
DistressedDistressed · -15% CAGR over 5y
Location
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Computed from 5 filingsDevelops offshore renewable energy projects, particularly floating offshore wind. Activities include site development, project management, engineering planning, and financing, working with industry…
Serves energy-sector partners, public stakeholders and local communities involved in commercial-scale floating offshore wind projects, with emphasis on UK and US markets.
Financial Health
StrongStrong · Hiring · 19% CAGR over 4y
Location
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Computed from 2 filingsDevelops, owns and operates onshore wind farm projects that generate renewable electricity for the grid. Activities include site identification, planning and financing, construction, power generation…
Targets UK landowners with potential renewable-energy sites and businesses buying electricity through corporate PPAs; also engages parties interested in operational or in-development wind farm…
Financial Health
StableStable
Location
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Develops and operates an offshore wind farm generating electricity from wind turbines. Manages offshore substations and cable infrastructure that collect and transmit up to 950MW of renewable…
Serves the UK electricity market, supplying power into the National Grid for homes and businesses. Also engages public-sector stakeholders, local communities, maritime users and supply-chain…
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Develops, constructs and manages renewable energy projects, including wind, solar and energy storage installations. Provides asset management, operations and maintenance, engineering consultancy, and…
Serves B2B renewable energy investors, landowners, utilities, local communities, and clean-energy asset owners/operators involved in wind, solar, storage, transmission and green hydrogen projects.
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Computed from 5 filingsDevelops, constructs and manages renewable energy projects, including wind, solar and energy storage. Provides asset management, operations and maintenance, consultancy, construction management, and…
Serves renewable energy investors, asset owners, developers, utilities, landowners and local communities involved in wind, solar, storage, transmission and hydrogen projects globally.
Financial Health
WeakWeak
Location
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Develops, constructs and manages renewable energy projects including wind, solar and energy storage. Provides asset management, operations and maintenance, construction management, consultancy,…
Serves B2B renewable energy stakeholders, including investors, asset owners, landowners, utilities and clean energy project developers, as well as local communities involved in wind, solar, storage,…
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Develops, constructs and supports renewable energy and energy storage projects. Provides services including project development, construction management, asset management, operations and maintenance,…
Serves B2B and stakeholder groups in renewable energy, including landowners, local communities, investors, asset owners, and project owners needing development, construction, and operational support…
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Develops, builds, owns and operates renewable energy infrastructure projects. Invests in and manages portfolios of solar photovoltaic, onshore wind and battery energy storage assets, covering project…
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Develops, constructs and manages renewable energy projects, including wind and solar farms and energy storage systems. Provides asset management, operations and maintenance, consultancy, and digital…
Serves renewable energy investors, asset owners and operators, landowners, communities, utilities and developers involved in wind, solar, energy storage, grid and clean energy infrastructure projects.
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Develops, constructs and manages renewable energy and power infrastructure projects, including wind, solar and energy storage. Provides asset management, operations and maintenance, consultancy,…
Serves renewable energy investors, asset owners, utilities, landowners and local communities involved in wind, solar, storage, grid, hydrogen and hydro projects globally.
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Develops, constructs and manages renewable energy projects including wind farms, solar installations and energy storage systems. Provides project development, construction management, operations and…
Serves B2B renewable energy investors, asset owners and developers, plus landowners and local communities involved in wind, solar, storage, transmission and green hydrogen projects globally.
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Financial sub-scores
Computed from 2 filingsDevelops, finances, constructs, owns and operates renewable energy generation and battery energy storage projects, managing an investment platform focused on building and operating wind, solar and…
Serves institutional investors and energy-sector partners involved in renewable power and storage projects across Europe.
Financial Health
StableStable
Location
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Computed from 2 filingsActs as a joint venture partner in offshore wind projects, developing large‑scale offshore wind farms with energy partners. Participates in seabed lease bids, project development, and planned…
Serves UK energy-market stakeholders, including public authorities, grid/offtake partners and electricity suppliers, with households identified as the end beneficiaries of its offshore wind projects.
Financial Health
StableStable · Hiring · 19% CAGR over 1y
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Provides engineering, project management and specialist services for offshore wind farm projects, including design, build planning, logistics, foundation installation support, moorings, inspection,…
Serves offshore wind farm developers, owners and operators worldwide, including clients involved in planning, building and operating offshore wind energy assets across the offshore energy sector.
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Develops, constructs, owns and operates renewable energy projects, primarily onshore wind farms, and is expanding into solar power. Manages project development, construction and operational wind farm…
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Develops, owns and operates renewable energy projects, primarily onshore wind farms and solar installations. Activities include project development, construction oversight and operational management…
Serves electricity purchasers, energy markets, local communities and potential commercial users such as distilleries, with renewable power supplied to homes across the UK and Scandinavia.
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Develops, constructs, owns and operates renewable energy generation and battery storage projects. Acts as an investment platform financing and managing wind, solar and energy storage assets and…
Serves investors seeking returns from renewable energy and storage projects, and works with project partners and local communities across Europe, including the UK, Finland and Italy.
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Computed from 3 filingsDesigns, develops and manages renewable energy projects including wind and solar generation, battery energy storage and microgrids. Supplies wind turbines and remote power systems, and provides…
Serves businesses and organisations adopting renewable energy, including commercial energy users, infrastructure owners and sustainability teams. Also targets public and development-backed projects…
Financial Health
HealthyHealthy · Growing · 0% CAGR over 2y
Location
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Develops and manages a floating offshore wind farm project, including planning, stakeholder engagement, and supply chain coordination, to generate large‑scale renewable electricity from offshore wind…
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Develops, finances, builds and operates onshore wind and solar energy projects. Manages project planning, construction and operation of renewable power sites and sells generated electricity through…
Serves UK landowners with potential renewable sites and corporate energy buyers seeking power purchase agreements for wind farm electricity.
Financial Health
N/AN/A
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Develops, invests in, and operates grid-scale renewable energy projects, including onshore wind, solar and energy storage. Provides project development, co-development, asset management and…
Serves landowners, renewable energy project owners, co-development partners and businesses involved in grid-scale wind, solar and storage projects across Europe, alongside communities linked to local…
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Develops large-scale renewable energy projects, including offshore wind farms and battery energy storage systems. Activities include planning, development, and delivery of energy infrastructure…
Serves B2B customers and partners in the renewable energy sector, including utilities, energy companies, port operators and asset owners involved in offshore wind and battery storage projects in the…
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N/AN/A
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Owns, develops and operates renewable energy generation assets, including solar farms and onshore and offshore wind projects. Manages a portfolio of operational sites and develops new projects, with…
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Owns, develops and operates renewable energy assets including solar farms and onshore and offshore wind projects. Manages a portfolio of generation sites and develops new projects, including battery…
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Develops, finances, constructs, owns and operates renewable energy and battery storage projects, including wind and other power generation assets, managing project development and investment to…
Serves investors seeking stable returns from European renewable energy and storage projects, plus energy-sector partners and local stakeholders involved in utility-scale project delivery.
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Develops, constructs, owns and operates renewable energy generation and battery storage projects. Invests in and manages wind, solar and energy storage assets, building and operating power…
Targets investors seeking stable returns from renewable energy and storage projects, with a market focus on European assets in countries including the UK, Finland and Italy.
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Provides engineering and advisory services for offshore wind energy projects. Offers site condition analysis, geotechnical and geophysical support, structural design, survey management, climate and…
Serves offshore wind and renewable energy project developers, owners and wider project teams needing engineering, advisory and project delivery support across the full project lifecycle in global…
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Develops, finances, constructs, owns and operates renewable energy and energy storage projects. Activities include investment in wind, solar and battery storage assets, managing project development,…
Serves institutional investors and energy-market counterparties involved in utility-scale renewable energy and storage projects across Europe.
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N/AN/A
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Develops, finances, constructs, owns, and operates renewable power generation and energy storage projects, including wind and battery storage, and manages an investment platform that builds and holds…
Serves institutional investors and capital partners seeking exposure to European renewable energy and storage assets, alongside energy-sector stakeholders across Europe.
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Develops, finances, constructs, owns and operates renewable energy generation and battery storage projects. Invests in utility-scale wind, solar and energy storage assets and manages project…
Serves investors and energy-sector partners seeking exposure to renewable power and storage projects across Europe, alongside local communities affected by project development.
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Provides engineering and advisory services for offshore wind energy projects, including site condition analysis, geotechnical and geophysical engineering, structural design, transport and…
Sells to B2B clients developing renewable energy projects, especially offshore wind. Serves project owners, developers and wider project teams needing engineering, advisory and project delivery…
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Financial sub-scores
Computed from 2 filingsProvides technical services for onshore and offshore wind farms, including wind turbine installation, preassembly, operations and maintenance, decommissioning and repowering support. Also delivers…
Serves B2B customers in the global wind energy sector, including wind farm developers, turbine OEMs and asset owners operating onshore and offshore projects, plus wind industry technicians seeking…
Financial Health
StableStable · -74% CAGR over 1y
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Develops, owns and operates wind energy generation assets as part of a renewable energy portfolio, producing electricity from wind turbines and supplying power to the electricity grid.
Serves institutional renewable-energy investors and project partners, with generated power supplied to electricity grids serving homes and businesses.
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Develops, finances, constructs and operates utility-scale onshore renewable energy and energy storage projects, including solar and wind farms, and provides asset management and power supply…
Serves utilities, businesses, investors, governments, landowners and local communities needing utility-scale renewable energy and storage projects. Targets large organisations and public-sector…
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Computed from 2 filingsDevelops floating offshore wind power projects, including test and demonstration sites to support commercial deployment of floating wind turbines. Provides project development, planning and…
Targets public and private-sector energy stakeholders involved in floating
Financial Health
StableStable · 0% CAGR over 1y
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Develops, finances, constructs, owns, and operates renewable energy generation and energy storage projects. Focuses on building and managing wind, solar, and battery energy storage assets as part of…
Serves institutional investors and energy-sector counterparties across Europe, with engagement from local communities and public planning stakeholders around renewable power and storage projects.
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Develops, finances, builds, owns and operates large-scale renewable energy projects. Focuses on solar, wind, waste-to-energy and battery storage assets, supplying electricity to power grids and…
Targets institutional investors, development partners and energy market offtakers involved in large-scale renewable energy projects, with output feeding grids that serve homes and businesses globally.
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Computed from 5 filingsDevelops, builds and operates onshore wind and solar energy projects. Activities include site identification, securing land agreements, planning applications, project financing and construction, and…
Serves UK landowners with potential wind or solar sites and businesses seeking renewable electricity through corporate PPAs, alongside stakeholders in renewable energy project planning, financing and…
Financial Health
StrongStrong · Growing, Hiring · 17% CAGR over 4y
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Develops, finances, builds and operates renewable energy projects. Activities include early‑stage development through long‑term ownership of solar PV, wind power, green hydrogen and energy storage…
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Invests in, owns and operates renewable energy infrastructure projects. Portfolio includes onshore wind farms, solar photovoltaic and solar thermal plants, battery energy storage systems, and…
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Develops, finances, constructs and operates utility‑scale onshore renewable energy and energy storage projects, including solar and wind farms. Works with utilities, businesses, governments and…
Serves investors, corporates, utilities and governments seeking utility-scale renewable energy partnerships, plus landowners and local communities involved in project development across global…
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Develops, finances, constructs, owns and operates renewable energy generation and battery storage projects, including wind, solar and grid-scale storage, as part of an investment platform managing a…
Targets investors seeking returns from European renewable energy and storage assets, as well as project partners and local communities connected to clean energy infrastructure.
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Computed from 4 filingsDevelops wind power generation projects, including site surveys, planning and construction of onshore and offshore wind farms. Also manages operation and maintenance of wind turbines and related…
Financial Health
StrongStrong
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Develops, owns and operates renewable energy projects, primarily onshore wind farms and solar installations. Manages project development, construction and operational management of electricity…
Serves renewable electricity buyers, energy markets and end consumers, including homes and large power users, through wind and solar projects in the UK, Norway, Sweden and other European markets.
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Computed from 3 filingsProvides development, design, construction and installation of wind and photovoltaic power plants. Offers project management, EPC services, monitoring and maintenance, and advises clients on…
Serves renewable energy investors, green energy companies and third-party plant owners involved in medium and large wind and photovoltaic projects, with stakeholders including suppliers,…
Financial Health
DistressedDistressed · -11% CAGR over 2y
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Computed from 5 filingsInvestment firm focused on developing, financing, constructing and operating renewable energy and energy infrastructure assets. Invests in projects such as onshore and offshore wind, solar…
Serves investors and capital partners seeking exposure to clean energy and infrastructure assets, particularly across renewables, energy storage, power-to-X, bioenergy, and power and gas markets.
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StrongStrong
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Develops, finances, constructs and operates utility‑scale renewable energy and energy storage projects, primarily solar and wind. Works with utilities, businesses and investors to deliver power…
Sells to businesses, utilities, investors and public-sector buyers seeking utility-scale renewable energy and storage. Also serves landowners and communities involved in large onshore solar, wind and…
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How London Wind Energy companies work and how to sell to them
What they do
Revenue usually comes from project-linked work rather than seat-based subscriptions: development fees, success fees, asset-management retainers, engineering day rates, maintenance contracts, advisory mandates and, for owners, power sales or offtake-backed returns. London wind-energy firms often sit between capital and assets, shaping bids, financing packages, risk registers and operating plans for onshore and offshore portfolios. Pricing tends to follow the risk being transferred. Early-stage advisory may be day-rate or fixed-fee, while construction, operations and portfolio mandates are commonly multi-year, milestone-based or tied to availability, output or asset value.
Who they sell to
Typical buyers are infrastructure funds, utilities, renewable-power developers, asset owners, engineering contractors, corporate offtakers and public bodies connected to planning, ports or grid-adjacent work. Decision-makers tend to be investment directors, project directors, heads of procurement, general counsel, asset managers, engineering leads and finance teams managing covenant or return assumptions. Sales cycles are rarely short. Smaller advisory tasks can close through direct relationships, but mandates involving construction, operations or finance usually move through formal procurement, legal review and technical diligence. RFPs, preferred-supplier lists and partner introductions matter, particularly where safety liability or public money is involved.
What they buy
Most wind-energy firms tend to spend on tools and services that reduce project uncertainty or make assets easier to manage. Useful categories include project finance support, legal and planning advice, land or seabed rights administration, grid-connection consultancy, engineering design review, health-and-safety systems, maintenance planning, asset-performance analytics, document control, procurement support and insurance broking. Commercial teams may also buy CRM, proposal management, market intelligence, contract lifecycle management and accounting systems suited to long projects and joint ventures. Operators and service teams often need field-service software, remote monitoring, workforce scheduling, training, specialist recruitment and cyber security for operational technology.
Why and how to sell to them
Buying intent tends to appear around financing rounds, portfolio acquisitions, new development pipelines, contract renewals, leadership hires, insurance reviews, grid-connection milestones and movement from consent into construction or operations. Pain points are usually practical: delay risk, evidence for lenders, safety assurance, contractor coordination, cost control, asset downtime and uncertainty over offtake terms. Outbound works better when it is anchored to a visible project stage or corporate event, not a generic decarbonisation message. Sellers should show how they reduce due-diligence burden, shorten procurement work, improve audit trails or protect revenue under long-dated contracts, while accepting that technical validation will usually precede commercial agreement.
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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