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B2B Companies in London: 23,000+ Active Firms (2026)
B2B companies sell products and services to other organisations, with this London cohort spanning suppliers across services, technology and trade.
Buying centres tend to sit with commercial, finance, operations, procurement and technology teams rather than consumer-facing marketing alone. London-based B2B suppliers in this cohort sell into corporate, public-sector and professional buyers, with sales motions ranging from account-managed services to subscriptions, platform access, specialist advisory work and trade supply. Engagements are usually justified through risk reduction, revenue generation, cost control or access to scarce expertise. The buyer side is mixed: SMEs may buy packaged support or outsourced functions, while mid-market and enterprise customers tend to require procurement checks, service levels, security evidence and contract governance before spend is approved.
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London has 23,249 actively trading B2B companies in this list, making the capital a sizeable marketplace for suppliers that rely on repeat corporate purchasing rather than consumer demand. Reported employment totals 24,051 people, with headcount present for 126 of 126 firms, so the visible labour footprint is not confined to owner-managed consultancies. Scale is uneven: 2,687 companies have turnover above £5M, while 2,114 have been incorporated since 2022, leaving a long tail of established providers alongside newer entrants testing narrower commercial propositions.
Regulation follows the activity rather than the B2B label. A supplier carrying on financial services, telecoms, data processing or regulated professional work faces the rulebook for that activity, while business marketing sits across ICO guidance, PECR and UK GDPR. The practical distinction matters for sales teams: electronic mail to corporate subscribers does not need PECR consent, but the sender still has to identify itself and provide an opt-out route. Business-contact data remains personal data where an identifiable person is involved, and live marketing calls need screening against preference lists and previous objections.
Commercial pressure appears likely to favour business suppliers that can evidence shorter payback, lower operational risk or clearer compliance control. The cohort is broad, so consolidation will not look uniform: outsourced services, specialist consultancies and software-enabled providers tend to face different buyer scrutiny and margin pressure. Early-commercial entrants may find procurement harder as customers rationalise vendors and ask for tighter proof around data handling, delivery capacity and sector knowledge. At the same time, London remains a useful base for account-led selling because buyers, advisers and finance providers are close together, even if that proximity does not remove the burden of differentiation.
23,249
Active firms
2026
2,687
£5M+ firms
London cohort
2,114
Newer incorporations
Since 2022
Key facts
About 11% of the trading cohort reports turnover above £5M (2,687 of 23,249 firms) — the rest sits below that revenue band.
9% of the cohort was incorporated since 2022 (2,114 firms), so a sizeable share is in its first few filing cycles.
B2B is not a single licensed industry in the UK; obligations follow the underlying activity, such as financial services, telecoms, data processing or professional services.
The ICO says PECR covers direct marketing by live or automated calls, electronic mail and fax.
Live B2B marketing calls must be screened against CTPS and TPS, and businesses that have objected must not be called.
ONS reported 2.73 million VAT and/or PAYE businesses as of March 2025, up 0.4% from March 2024.
DBT estimated 5.5 million private-sector businesses at the start of 2024, with SMEs accounting for 99.8% of the private-sector business population.
Top London B2B companies
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsDevelops regulatory compliance software for asset managers, hedge funds, banks and other financial institutions. The platform automates monitoring of investment rules, shareholding disclosures,…
Serves compliance teams at asset managers, hedge funds, investment banks, pension funds and other financial institutions, from smaller firms to large global organisations managing regulated…
Financial Health
HealthyHealthy · Hiring · 18% CAGR over 4y
Location
KONECTA UK LTD
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsProvides outsourced customer contact and telemarketing services including inbound and outbound call handling, customer support, digital marketing and AI-enabled customer experience management. Also…
Serves large organisations and public sector bodies worldwide, including automotive, travel, financial services, insurance, healthcare, retail/e-commerce, telecoms, media, technology and utilities.
Financial Health
HealthyHealthy · Hiring · 29% CAGR over 2y
Location
Trajectory
4y · 2020–NowFinancial sub-scores
Computed from 4 filingsDevelops and operates an omnichannel demand‑side advertising platform that enables brands and agencies to plan, buy and measure digital advertising campaigns. Uses mobile app and location‑based data…
Serves B2B customers: brands, advertisers and media agencies managing omnichannel digital campaigns, especially marketing and media-buying teams focused on privacy-first audience activation and…
Financial Health
HealthyHealthy · Hiring · 8% CAGR over 4y
Location
EXPANDI LIMITED
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsProvides B2B marketing and advertising technology platforms, including account‑based marketing and advertising tools, intent data analytics, digital audience targeting and email marketing. Supplies…
Sells to B2B agencies, media companies and organisations, especially marketing and revenue teams using account-based marketing, advertising, data and intent solutions. Targets businesses seeking to…
Financial Health
WeakWeak · -4% CAGR over 2y
Location
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsProvides support services to an affiliated company that develops and operates a developer data platform. Activities include assisting with sales, marketing, and technical support for cloud database…
Serves software developers, startups, AI innovators and enterprise technology teams, with industry focus on financial services, telecoms, healthcare, retail, public sector and manufacturing.
Financial Health
StrongStrong · Hiring · 28% CAGR over 5y
Location
Trajectory
2y · 2024–NowFinancial sub-scores
Computed from 2 filingsProvides technology and operational support for a securities finance platform, enabling the arrangement and processing of securities lending and financing transactions, including automated trading,…
Serves global financial institutions active in securities finance, including agent lenders, broker-dealers, beneficial owners, repo and collateral desks, and trading, operations, compliance and data…
Financial Health
HealthyHealthy · Profitable, Hiring · 12% CAGR over 1y
Location
Incisive Business Media Limited
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsProvides business-to-business media, analysis and events for the financial services, asset management, enterprise technology and sustainability sectors. Publishes digital and print titles and…
Serves B2B organisations and professionals in financial services, asset management, pensions, enterprise technology and business sustainability, including marketers targeting advisers, senior…
Financial Health
WeakWeak · -12% CAGR over 2y
Location
INVESTCLOUD LIMITED
Trajectory
4y · 2022–NowFinancial sub-scores
Computed from 4 filingsDevelops financial technology software for wealth managers, asset managers and financial institutions. Provides platforms for trading, portfolio rebalancing, performance reporting, financial…
Serves B2B financial services firms, including wealth managers, asset managers, private banks, broker-dealers and TAMPs, as well as wealth professionals and their end clients.
Financial Health
StableStable · -77% CAGR over 3y
Location
LINEAR INVESTMENTS LIMITED
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsProvides electronic trade execution, prime brokerage and custody services for professional market participants. Offers multi‑asset trading, liquidity and cash management, and portfolio management for…
Serves professional financial-sector clients in alternative investments, including emerging managers, family offices, proprietary trading groups and broker-dealers across the UK, Europe, Asia and the…
Financial Health
StrongStrong · Growing, Hiring · 20% CAGR over 4y
Location
GIANT PRECISION LIMITED
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides software and managed services for recruitment agencies and hirers, including pre‑employment screening, payroll and timesheet processing, invoice finance, and contractor employment solutions…
Serves recruitment agencies, employers/hirers managing contingent workforces, and contractors needing employment options, with buyers including agency operators, compliance teams and…
Financial Health
StrongStrong · Hiring · 7% CAGR over 4y
Location
ECLERX LIMITED
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsProvides business process and digital operations services including customer experience management, financial services operations, financial crime compliance, data and analytics, digital marketing,…
Serves large enterprises and Fortune 500 clients in banking, financial services and insurance, telecom, media, entertainment, fashion, luxury, high-tech, manufacturing, distribution, retail and…
Financial Health
StrongStrong · Growing, Hiring · 29% CAGR over 2y
Location
SPORTRADAR UK LIMITED
Trajectory
2y · 2021–NowFinancial sub-scores
Computed from 2 filingsProvides sports data, statistics, and odds for betting operators, media companies, and sports organisations. Develops software platforms, APIs, live streaming, and analytics tools, and delivers…
Serves B2B customers including betting and gaming operators, media and technology companies, sports teams, leagues and federations, plus integrity and regulatory bodies in the sports sector.
Financial Health
StrongStrong · Profitable, Growing, Hiring · 22% CAGR over 1y
Location
KUBRICK GROUP LTD
Trajectory
2y · 2020–NowFinancial sub-scores
Computed from 2 filingsProvides data and AI consulting services, designing and implementing data platforms, analytics, and machine learning solutions. Recruits and trains data professionals who work within client…
Targets enterprise organisations and global brands across industries, particularly business and technology leaders responsible for data, AI, analytics, supply chain, operations, sales reporting and…
Financial Health
StrongStrong · Profitable, Hiring · 52% CAGR over 1y
Location
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsProvides cloud-based equity management software for companies to manage share registers and cap tables, administer employee share schemes, automate dividend distributions, and communicate with…
Sells B2B to high-growth startups, dividend-paying companies and member-owned cooperatives, serving internal HR, finance and legal teams as well as their investors, shareholders and employees.
Financial Health
StrongStrong · Profitable, Growing, Hiring · 38% CAGR over 2y
Location
FASANARA CAPITAL LTD
Trajectory
2y · 2024–NowFinancial sub-scores
Computed from 2 filingsManages investment funds focused on fintech, digital lending, and technology‑enabled financial services. Provides asset management for institutional investors and invests in fintech companies,…
Serves institutional investors and professional allocators, including funds, family offices and wealth managers seeking exposure to asset management and fintech-focused investment strategies.
Financial Health
HealthyHealthy · Profitable, Hiring · 17% CAGR over 1y
Location
TMA DATA MANAGEMENT LIMITED
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides smart metering, meter data collection and management services for energy suppliers. Offers CRM and billing systems, DCC integration, carbon reporting, regulatory compliance support, and…
Serves UK energy suppliers, third-party intermediaries and large energy users needing metering, data, CRM/billing, switching, settlement and carbon compliance support across commercial and domestic…
Financial Health
StableStable · -67% CAGR over 4y
Location
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsProvides a subscription software platform delivering data, news and analytics on global debt markets. Uses AI to analyse bonds, loans, covenants and deal activity, supporting banks, investors and…
Serves B2B credit-market professionals globally, including banks, buyside investors, advisors and law firms, with users in origination, sales and trading, restructuring, securitization and private…
Financial Health
StrongStrong · Hiring · 87% CAGR over 5y
Location
Alchemy Technology Services Limited
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsProvides technology consulting, system integration, and application management services for the insurance sector, specialising in implementation and support of Guidewire software platforms and…
Serves B2B insurance organisations globally, including insurers, reinsurers, brokers, MGAs, syndicates, insurtechs and software providers, particularly Guidewire customers and firms in the London…
Financial Health
StrongStrong · Growing, Hiring · 26% CAGR over 5y
Location
MAKOR SECURITIES LONDON LIMITED
Trajectory
2y · 2024–NowFinancial sub-scores
Computed from 2 filingsProvides agency brokerage and trade execution services for institutional investors across equities, fixed income, foreign exchange and derivatives. Also offers quantitative research, structured…
Serves institutional investors and financial institutions, including pension funds, mutual funds, hedge funds, quant funds, risk arbitrage specialists, proprietary trading desks and private banks…
Financial Health
HealthyHealthy · 5% CAGR over 1y
Location
INTERMEDE INVESTMENT PARTNERS LIMITED
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsProvides investment management services focused on global equities. Conducts fundamental analysis of companies to select and manage portfolios of publicly listed stocks, including UCITS funds, for…
Serves investors seeking global equities exposure, including prospective UCITS fund investors and clients requiring specialist equity portfolio management.
Financial Health
StableStable · Hiring · 8% CAGR over 2y
Location
CRU INTERNATIONAL LIMITED
Trajectory
2y · 2023–NowFinancial sub-scores
Computed from 2 filingsProvides market analysis, commodity price assessments, data services, and strategic consulting for the global mining, metals, and fertilizer industries. Organises industry conferences, training,…
Serves B2B and public-sector customers in mining, metals, fertilizers, energy transition and related commodity markets, including producers, manufacturers, investors, traders, contractors, utilities,…
Financial Health
HealthyHealthy · Hiring · 16% CAGR over 1y
Location
KWA Analytics Ltd
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsProvides consulting and technical services for trading and risk management systems used in energy, commodities, treasury and capital markets. Services include implementation and support of platforms…
Serves enterprise and public-sector organisations in energy, commodities, shipping, treasury, central banking, capital markets and asset/investment management, especially teams using trading and risk…
Financial Health
StrongStrong · Hiring · 27% CAGR over 5y
Location
ERGO UK SPECIALTY LIMITED
Trajectory
2y · 2023–NowFinancial sub-scores
Computed from 2 filingsProvides specialty commercial insurance underwriting for non‑industrial businesses, offering access to ERGO Group insurance capacity. Manages policy distribution, underwriting, and claims handling…
Sells to commercial, non-industrial customers in the UK and Republic of Ireland, working with clients through its distribution network in specialty insurance markets.
Financial Health
StableStable · Hiring · 15% CAGR over 1y
Location
EASYFAIRS UK LIMITED
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsOrganises business-to-business exhibitions, trade shows and conferences across multiple industries, bringing companies and professionals together for networking, product demonstrations and learning.…
Serves businesses, professional communities, exhibitors and event organisers seeking trade shows, conferences and live events, plus organisers of guest events such as concerts and sporting events.
Financial Health
WeakWeak · Hiring · 5% CAGR over 2y
Location
CONTINUUM ADVISORY PARTNERS LIMITED
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsProvides corporate finance advisory services focused on financial services, financial technology and professional services companies. Advises on mergers and acquisitions, buy‑side and sell‑side…
Serves B2B clients across Europe: financial services, professional services and fintech companies, as well as private equity investors, entrepreneurs, boards and shareholders.
Financial Health
HealthyHealthy · Hiring · 41% CAGR over 2y
Location
The Kite Factory Limited
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides media planning and buying services for brands and charities, using audience insight and data analysis to plan, place and measure advertising across channels including TV, out‑of‑home and…
Serves B2B clients including charities, consumer brands and commercial organisations, with examples spanning visitor attractions, NGOs, food and drink, and fitness or wellness brands.
Financial Health
StrongStrong · Growing, Hiring · 16% CAGR over 4y
Location
The Barton Partnership Limited
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides recruitment and talent solutions focused on strategy, transformation and value creation roles. Services include executive search, interim recruitment and access to independent consultants…
Serves businesses seeking strategy and transformation talent, including private equity funds and portfolio companies, professional services consultancies, listed companies, SMEs, family-owned firms,…
Financial Health
StrongStrong · Growing, Hiring · 6% CAGR over 4y
Location
I.F.F RESEARCH LIMITED
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides social and market research services for public sector bodies and commercial organisations, including surveys, evaluations, behavioural insight studies, customer and stakeholder research, and…
Serves public sector bodies, policymakers, regulators, housing providers, financial services firms, education and health organisations, legal/justice and third-sector organisations, and other UK…
Financial Health
StableStable · -15% CAGR over 4y
Location
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides recruitment and executive search services, including permanent hiring, interim placements and retained search. Specialises in roles across finance, HR, procurement, risk, tax, cyber, data…
Serves B2B hiring teams and executives across private equity, financial services, commerce and industry, and higher education in the UK, Europe and North America.
Financial Health
HealthyHealthy · Hiring · 46% CAGR over 4y
Location
Shilton Sharpe Quarry Limited
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsProvides legal recruitment and executive search services for law firms and corporate legal departments. Places lawyers, partners and legal professionals, and advises on team moves, office launches,…
Serves leading UK, US and international law firms, mid-sized and boutique practices, and in-house legal, compliance and governance functions at organisations in major global markets.
Financial Health
StrongStrong · Growing · 0% CAGR over 2y
Location
ORBIT PARTNERS LIMITED
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides management consultancy connecting private capital investors with industry advisors. Identifies and introduces executives and sector specialists to support investment sourcing, due diligence,…
Serves private capital and private equity firms globally, alongside senior industry executives seeking relationships with investors, board roles, co-investment opportunities, and post-deal leadership…
Financial Health
StableStable · -63% CAGR over 4y
Location
We Are Orbis Group Limited
Trajectory
2y · 2024–NowFinancial sub-scores
Computed from 2 filingsProvides specialist recruitment and talent acquisition services focused on technology roles. Offers permanent hiring, executive search and consultancy, connecting employers with candidates in areas…
Serves startups through global corporates in technology-led, regulated sectors, especially technology, financial services and life sciences, targeting hiring leaders and professionals in software,…
Financial Health
StableStable · -42% CAGR over 1y
Location
FACT Worldwide Limited
Trajectory
4y · 2020–NowFinancial sub-scores
Computed from 4 filingsProvides corporate due diligence, investigations, and intelligence services including fraud investigations, asset tracing, and corporate inquiries. Offers digital forensics and intellectual property…
Serves UK and international businesses, brand owners and legal teams across sectors that need support with risk, fraud, asset tracing, corporate disputes, intellectual property crime and digital…
Financial Health
HealthyHealthy · Hiring · 40% CAGR over 4y
Location
Prosapient Limited
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsOperates a technology-driven expert network platform that connects businesses, consultancies and private equity firms with industry specialists for paid consultations, surveys and research calls, and…
Serves B2B research buyers at consultancies, private equity firms and investment teams, including professionals responsible for due diligence, market research, competitive intelligence and strategy…
Financial Health
StrongStrong · Growing, Hiring · 19% CAGR over 5y
Location
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsProvides executive search, recruitment, and consultancy services for organisations, focusing on sectors including financial services, legal, compliance, technology, and business support. Places…
Serves businesses, primarily global and top-tier employers in financial services, legal, technology and business support. Targets hiring managers and leadership teams recruiting permanent, interim…
Financial Health
StableStable · -12% CAGR over 4y
Location
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides financial advisory services to institutional investors and family offices, advising on mergers and acquisitions, divestitures, capital raising through private placements and debt, and…
Serves institutional investors and family offices across Europe, the Middle East and Central Asia, particularly those involved in energy, infrastructure, telecom and natural resources transactions.
Financial Health
StableStable
Location
CENSUSWIDE LIMITED
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsProvides quantitative and qualitative market research services, collecting primary data from consumer, business, and healthcare audiences. Conducts surveys and studies that support PR campaigns,…
Serves PR, marketing and business decision-makers at brands, agencies, B2B/corporate firms, consumer businesses, healthcare organisations, charities and public sector bodies seeking audience insight…
Financial Health
StrongStrong · Growing, Hiring · 14% CAGR over 4y
Location
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsOperates a proprietary trading firm active in centrally cleared listed derivatives markets, providing liquidity through market making and algorithmic trading. Offers traders market access, direct…
Serves professional derivatives traders, including market makers, algorithmic traders and liquidity provision traders operating on centrally cleared listed exchanges.
Financial Health
HealthyHealthy · 0% CAGR over 2y
Location
Ptarmigan Media Limited
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides media planning and buying services for financial services brands, using audience data, market insights and technology to plan campaigns, place advertising across channels, and deliver media…
Serves global financial services brands, particularly marketing and communications teams targeting specialist audiences across international markets.
Financial Health
StableStable · Hiring · 3% CAGR over 4y
Location
GIANT PROFESSIONAL LIMITED
Trajectory
4y · 2021–NowFinancial sub-scores
Computed from 4 filingsProvides software and managed services for recruitment agencies, hirers and contractors, including pre‑employment screening, payroll and timesheet processing, compliance checks, invoice finance, and…
Serves recruitment agencies, hirers and contractors, including businesses managing temporary or global workforces and agencies needing compliance, screening, payroll, finance and back-office support.
Financial Health
HealthyHealthy · Hiring · 3% CAGR over 4y
Location
SPITFIRE TECHNOLOGY GROUP LIMITED
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides business telecommunications and IT services including VoIP and SIP telephony, fibre broadband and Ethernet connectivity, hosted PBX systems, mobile and IoT connectivity, managed WAN and VPN…
Serves UK businesses of varying sizes, including SMEs, organisations buying through Crown Commercial Service frameworks, and telecoms/channel partners needing wholesale or partner services.
Financial Health
StrongStrong
Location
THE AFO NETWORK LIMITED
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsProvides quantitative and qualitative market research services through an international network of agencies, collecting audience insights via online panels and surveys and supporting marketing,…
Targets global brands and larger businesses, especially insights, communications and marketing teams across healthcare, corporate, consumer and international markets.
Financial Health
HealthyHealthy · Hiring · 10% CAGR over 4y
Location
LDC (DANTC) LIMITED
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsOperates an investment trust focused on UK equities and provides independent professional services including corporate secretarial and entity management, corporate trustee and pension trustee…
Serves institutional and private investors seeking UK equity income exposure, and B2B clients including corporates, pension schemes, issuers/borrowers, trustees and global organisations needing…
Financial Health
StableStable
Location
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsProvides engineering and IT consulting services supporting research and development projects. Services include mechanical engineering, embedded and application software, cybersecurity, AI, data…
Serves businesses and public-sector organisations in aeronautics, defence, automotive, rail, energy, life sciences, industrial equipment, telecoms, finance, retail, media and government.
Financial Health
HealthyHealthy · Profitable · -5% CAGR over 2y
Location
HC Group Global Holdings Ltd
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides recruitment and executive search services for the global commodity trading sector. Sources and places professionals across functions including trading, finance, technology, risk, and…
Serves B2B clients in the global commodities sector, including agriculture, energy, metals, minerals, shipping, logistics and financial services firms seeking executive and specialist talent.
Financial Health
HealthyHealthy · -68% CAGR over 4y
Location
BIE Executive Limited
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides executive recruitment services, including executive search, interim management placement, and leadership advisory. Sources senior leaders and interim executives and supports organisations…
Serves businesses seeking senior leadership and interim management talent, including large corporates, FTSE-listed companies, private-equity-backed organisations and transformation-focused executive…
Financial Health
StrongStrong · Hiring · 13% CAGR over 4y
Location
Block Solutions Limited
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsProvides IT infrastructure and digital transformation services, including network design and management, collaboration and unified communications systems, and smart building technology integration…
Serves healthcare providers, education institutions and enterprise organisations across sectors and sizes, including NHS trusts and teams responsible for digital infrastructure, workplace technology…
Financial Health
StrongStrong · Profitable · 28% CAGR over 1y
Location
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides consultancy services to businesses on claiming government tax incentives, including R&D tax credits, Patent Box relief, capital allowances, VAT support, and energy tax exemptions, assisting…
Serves UK SMEs and larger businesses undertaking innovation projects, across engineering, manufacturing, energy, health/pharma, architecture, financial services, oil & gas, construction, software,…
Financial Health
DistressedDistressed · -4% CAGR over 4y
Location
SAFE HARBOUR 2020 LIMITED
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsProvides freelancer payment and compliance services for businesses using subcontractors. Manages self-billing, payment processing and statutory reporting, and conducts CIS, IR35 and employment status…
Targets UK businesses that use self-employed freelancers or subcontractors for project-based work, particularly CIS/IR35-exposed organisations seeking alternatives to PAYE or umbrella arrangements.
Financial Health
HealthyHealthy · 0% CAGR over 5y
Location
Trajectory
2y · 2024–NowFinancial sub-scores
Computed from 2 filingsActs as a holding company for entities that develop and manage quantitative, systematic trading strategies across global commodity markets and offer managed commodity investment portfolios and…
Targets qualified investors and professional allocators seeking access to systematic commodity-focused investment strategies through managed account or curated portfolio offerings.
Financial Health
WeakWeak · Profitable, Hiring · 24% CAGR over 1y
Location
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How London B2B companies work and how to sell to them
What they do
London B2B suppliers usually earn through repeat commercial relationships rather than one-off consumer volume. Revenue models include subscriptions for software and information services, retainers for outsourced functions, project fees for advisory or implementation work, usage-based charges for platforms, and margin on trade supply or distribution. Low-friction offers may be packaged around monthly fees, per-seat access or standard service bundles, while larger mandates tend to be contracted through annual agreements, statements of work or managed-service terms. The common thread is measurable business utility: helping customers win revenue, reduce operating burden, manage compliance, source specialist capacity or procure goods that sit inside their own delivery chain.
Who they sell to
Most London B2B firms sell to SMEs, mid-market companies, enterprise groups, public-sector bodies or professional practices, with the buyer changing by offer type. Finance directors, operations leaders, commercial directors, CTOs, procurement teams and practice partners are typical stakeholders; legal and information-security reviewers often appear before signature on larger contracts. Smaller deals may close through founder-led sales, referrals, self-serve ordering or a short direct-sales process. Larger contracts more often involve account management, partner introductions, procurement portals, security questionnaires, service-level terms and contract negotiation. Public-sector work can move through frameworks or tender processes, so timing and proof of prior delivery matter.
What they buy
Most B2B suppliers tend to spend on systems and services that help them sell, deliver and evidence performance to their own customers. Common software categories include CRM, billing, finance operations, customer support, marketing automation, sales intelligence, analytics, workflow tools, cyber security, identity management, cloud hosting and HR systems. Services spend often covers accountancy, tax, legal review, information-security assessment, recruitment, outsourced marketing, bid support, public relations and specialist consulting. Providers with account-managed revenue may also buy enablement, proposal tooling, call recording, forecasting and customer-success support. Firms handling business-contact data may need help with consent management, retention policies and UK GDPR processes.
Why and how to sell to them
B2B companies tend to evaluate vendors when customer acquisition costs rise, renewal rates weaken, procurement demands more evidence, or delivery teams struggle to service larger accounts. Other useful signals include a new finance, commercial or technology leader, recent hiring across sales or operations, a move from project work to recurring contracts, entry into regulated customer segments, or a need to formalise data-handling and marketing processes. Outbound works better when it links to a specific commercial constraint: shorter payback, cleaner reporting, fewer manual checks, lower compliance risk, faster onboarding or better conversion of existing pipeline. Generic efficiency claims usually need proof before they travel far.
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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