B2B Companies Using Volcanic in the UK: 83 Active Firms (2026)
UK B2B companies running a specialist web platform operate business-facing websites and digital lead-capture journeys across service sectors.
For B2B service suppliers, this specialist web platform sits close to the commercial front door: job pages, service-line content, corporate enquiry forms and consent-aware lead capture. Adoption tends to signal a direct-channel posture rather than a purely relationship-led sales model. The internal buying centre usually spans marketing, operations and compliance, with IT involved where hosting, security headers or analytics integrations touch wider systems. These users are typically selling to corporate HR, procurement, operations or professional-services buyers, so the website has to support both inbound lead generation and recurring account management rather than a simple brochure presence.
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The UK adoption cohort contains 83 actively trading companies running this specialist platform. Recruitment & Staffing accounts for 95.2% of the cohort, with smaller overlap into IT Services & Managed Services at 3.6%, Management Consulting at 2.4%, Education & Training at 2.4% and SaaS at 1.2%. Within the detected page-builder category, the platform accounts for 0.3% of a 32,992-company sector comparison, so it sits as a niche choice rather than a common default. Reported employment across the cohort totals 5,209 people. Registered addresses skew towards London at 30.1%, followed by the South East at 14.5%, Yorkshire and The Humber and the North West at 10.8% each, and the West Midlands at 9.6%.
B2B activity in the UK is not governed by a single licence regime; obligations follow the underlying service, whether financial services, telecoms, data processing or professional services. For companies running this stack, the recurring compliance issue is usually marketing and contact handling. The ICO says PECR covers direct marketing by live or automated calls, electronic mail and fax. Its guidance treats corporate subscribers differently for electronic mail, so emails or texts to corporate bodies do not need PECR consent, but the sender must identify itself and provide a valid opt-out route. UK GDPR still applies where business-contact personal data is processed, and live sales calls need screening against CTPS and TPS objections.
Adoption appears tied to the shape of recruitment and specialist-services sales rather than to a broad website-rebuild cycle. Specialist platforms tend to hold where firms need structured vacancy publishing, candidate capture, multi-office content and direct enquiry routing, especially when marketing teams own more of the funnel. Generic website builders and wider customer-management suites keep price pressure on smaller agencies, while consolidated staffing groups may reduce the number of separate sites they maintain. Cookie consent, analytics governance and business-contact outreach rules are likely to remain routine maintenance work, not a completed-at-launch task.
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
Active director count is the full Companies House board, so it can be higher than the number of names listed — we leave out nominee and formation-agent directors, who aren’t worth contacting. It’s blank for the small number of companies whose officers we haven’t fetched yet.
You’re charged per business, not per row. Where a business trades through several registered companies you get every one, and the Group Primary column marks one row per business — filter to those and the count matches your invoice. Rows sharing a website are not automatically one business: franchises and multi-site operators each count separately, and where names don’t prove a relationship we count them apart rather than guess.
Adoption by company size
Adoption of Volcanic rises with company size across the trading UK B2B companies in this cohort. 0% of the 76,784 companies with under 10 employees run Volcanic (33 detected). 0.1% of the 31,788 companies with 10–50 employees run Volcanic (43 detected). 0.2% of the 3,773 companies with over 50 employees run Volcanic (8 detected). That is a 0.2% gap between the over 50 employees and under 10 employees bands.
83
Active firms
2026
0.3%
Of detected Page builders share
UK B2B
12
Median headcount
Filed accounts
192
Verified directors
Across this cohort
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Key facts
About 12% of the trading cohort reports turnover above £5M (10 of 83 firms) — the rest sits below that revenue band.
6% of the cohort was incorporated since 2022 (5 firms), so a sizeable share is in its first few filing cycles.
Within B2B firms with a detectable page-builder system, this platform accounts for 0.3% (83) of a 32,992-company denominator.
Recruitment & Staffing dominates the detected cohort at 95.2% (79), with IT Services & Managed Services next at 3.6% (3).
London accounts for 30.1% (25) of registered offices, followed by the South East at 14.5% (12).
Website stacks tend to include cloud, bot-checking and delivery-network layers: 94.0% (78) also show a cloud infrastructure service, 94.0% (78) show anti-bot tooling and 92.8% (77) show a content-delivery service.
For B2B marketing, ICO guidance says PECR electronic-mail consent rules do not apply to corporate subscribers, but sender identity, a valid opt-out route, CTPS and TPS screening for live calls, and UK GDPR obligations still matter.
Recruitment market share among UK B2B
Share of the 32,992 UK B2B with a detectable system. As of June 2026.
What else do Volcanic-running B2B run?
Share of the 83 Volcanic-running UK companies where each technology was also detected. As of June 2026.
Where Volcanic B2B are, and how healthy they look
By region
By registered-office region; companies without a regional match count toward Rest of UK.
By financial health
From filed accounts; firms with fewer than two filings show as insufficient history.
12
Median headcount
£1M
Median UK turnover
12%
Above £5M turnover
5
Incorporated since 2022
Verified directors — included in the file
Director names and roles for these 162 businesses, alongside financials and websites, in one Excel + CSV file.
Top UK B2B using Volcanic
Ranked by sales-readiness score: an AI model assesses what each company does, its sector and size, and scores its overall fit. Best-fit prospects appear first.
Financial sub-scores
Computed from 2 filingsProvides workforce management and recruitment services, including managed service provider (MSP) and recruitment process outsourcing (RPO) programmes, contingent workforce sourcing, services…
Serves large organisations and enterprise HR/procurement teams globally across multiple sectors, especially those managing contingent workforces, recruitment outsourcing, services procurement and…
Financial Health
StableStable · Profitable · -12% CAGR over 1y
Location
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Computed from 5 filingsProvides recruitment and placement of finance, IT and business transformation consultants and contractors. Connects organisations with CFOs, programme directors, finance transformation specialists…
Serves FTSE 100–350 companies, public sector organisations, private equity-backed and multinational businesses, targeting senior finance, IT and transformation leaders.
Financial Health
StrongStrong · Growing · 0% CAGR over 4y
Location
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Computed from 5 filingsProvides recruitment and workforce consulting services through specialist brands, placing professionals in technology, finance, AI and life sciences roles. Offers permanent and contract hiring,…
Serves businesses in technology, finance, regulated sectors, AI and life sciences, especially organisations scaling teams, entering new regions, building hiring functions, or filling specialist risk,…
Financial Health
StrongStrong · Hiring · 24% CAGR over 4y
Location
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Computed from 5 filingsProvides recruitment and workforce solutions, supplying permanent and contract staff. Offers candidate sourcing, recruitment process outsourcing, managed service provider and statement-of-work…
Serves employers seeking permanent, contract and outsourced workforce support across engineering, IT, construction, life sciences, technology, defence, infrastructure, finance and professional…
Financial Health
WeakWeak · -4% CAGR over 4y
Location
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Computed from 5 filingsProvides recruitment and talent search services for procurement, supply chain, commercial contracts and quantity surveying roles. Supports permanent hires and managed service staffing for corporate…
Serves large private-sector brands and major public sector departments in the UK, EU and US, targeting procurement, supply chain, commercial contract, programme risk and quantity surveying functions…
Financial Health
WeakWeak · 1% CAGR over 4y
Location
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Provides recruitment and staffing services including permanent hiring, temporary and contract staffing, executive search, and contingent workforce management. Also offers business process…
Serves employers and public sector organisations across accounting, banking, construction, engineering, healthcare, hospitality, HR, legal, life sciences, supply chain and technology.
Location
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Computed from 4 filingsProvides cloud-based business software for finance, HR and payroll, CRM, ERP, payments, learning and compliance, warehouse and operations management, plus managed IT services, serving sectors such as…
Sells to businesses, charities, education providers, healthcare and social care organisations, local authorities, and sector-specific teams in areas such as finance, HR, operations, recruitment,…
Financial Health
DistressedDistressed · -77% CAGR over 3y
Location
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Computed from 5 filingsProvides technology, data and AI training and consultancy services. Operates a training academy that develops software engineering, data, cybersecurity and business analysis professionals and deploys…
Serves public and private sector organisations, particularly blue-chip enterprises in finance, insurance, media, retail, legal and telecoms, targeting leaders responsible for technology, data, AI and…
Financial Health
StrongStrong · Hiring · 8% CAGR over 4y
Location
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Computed from 5 filingsProvides recruitment and executive search services for the energy transition sector, sourcing professionals for renewable generation, energy storage, clean gases, decarbonisation, and transmission…
Serves B2B hiring teams and investors in the energy transition sector, including renewable developers, operators, investment funds and grid, storage, clean gases, decarbonisation and carbon/nature…
Financial Health
StrongStrong · Growing, Hiring · 68% CAGR over 4y
Location
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Computed from 5 filingsProvides recruitment and staffing services placing permanent, contract, and executive roles. Focuses on sectors including energy and utilities, engineering and renewables, technology, insurance,…
Serves companies hiring specialist permanent, contract, executive and project talent, plus candidates, across energy and utilities, renewables, technology, MEP/FP engineering, insurance, commodities…
Financial Health
StrongStrong · Growing, Hiring · 37% CAGR over 5y
Location
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Computed from 5 filingsProvides recruitment and staffing services for financial services and technology organisations, specialising in roles across IT and digital development, quantitative and data science, cybersecurity,…
Serves financial institutions, investment banks, fund administrators, FinTech and digital organisations hiring IT, digital, quant, data science, cyber, and change/transformation talent.
Financial Health
HealthyHealthy · Hiring · 3% CAGR over 4y
Location
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Computed from 5 filingsProvides recruitment and staffing services for digital transformation and enterprise technology roles, specialising in SAP ECC and S/4HANA. Sources contractors and permanent staff across areas…
Serves business owners and hiring managers leading SAP and digital transformation programmes, including enterprises and consultancies in consumer goods, life sciences, chemicals, software, retail,…
Financial Health
StableStable · Hiring · 57% CAGR over 4y
Location
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Computed from 5 filingsProvides recruitment and workforce supply services for infrastructure, construction, power generation and oil and gas projects. Sources and places contract and permanent engineering, technical and…
Serves contractors, EPCs, asset owners and consultancies in infrastructure, construction, power and oil & gas, especially organisations running complex, safety-critical projects across the UK.
Financial Health
HealthyHealthy · -75% CAGR over 4y
Location
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Computed from 2 filingsProvides technology recruitment services, placing contract and permanent professionals in roles such as software development, cloud infrastructure, data, cybersecurity, and digital. Also offers…
Serves businesses of varied sizes across industries, from social media giants to fast-growing unicorns, alongside candidates in software, data, cloud, cybersecurity, digital and change disciplines.
Financial Health
StableStable · Hiring · 17% CAGR over 1y
Location
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Computed from 5 filingsProvides recruitment services including permanent, contract and contingent hiring, and managed service provider (MSP) recruitment support. Places professionals in technology, finance, media and…
Serves employers across the UK and Ireland, particularly ambitious companies hiring for technology, media and marketing, commercial, HR, finance and office support roles, including permanent,…
Financial Health
StrongStrong · Growing, Hiring · 61% CAGR over 4y
Location
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Computed from 3 filingsProvides recruitment and talent search services for engineering, manufacturing and technical sectors. Offers permanent, contract, interim and executive recruitment, managed services and design…
Serves UK and global employers in engineering, manufacturing and technical sectors, including automotive, aerospace, defence, energy, medical devices, FMCG and advanced manufacturing, hiring across…
Financial Health
StableStable · -83% CAGR over 2y
Location
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Computed from 5 filingsSupplies temporary and contract labour to construction and infrastructure projects, including tunnelling, rail safety‑critical roles and civil engineering works. Recruits and places site operatives…
Serves construction, tunnelling, rail and infrastructure employers, including UK Tier 1 contractors and civil engineering firms needing skilled labour and safety-critical workers.
Financial Health
StableStable · -67% CAGR over 4y
Location
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Computed from 5 filingsProvides recruitment services for the construction and engineering industries, placing skilled professionals in temporary and permanent roles. Specialises in civil engineering, construction, M&E,…
Serves main contractors and specialist subcontractors in civil engineering, construction, M&E, renewables and rail, alongside skilled professionals seeking temporary or permanent roles in these…
Financial Health
StrongStrong · Growing, Hiring · 70% CAGR over 4y
Location
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- Euro-Projects Recruitment08165779
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Computed from 5 filingsProvides recruitment and staffing services placing permanent and contract staff in technical, engineering, manufacturing, IT, sales, marketing and executive roles. Offers executive search, contractor…
Serves employers and candidates in technical and engineering, manufacturing and production, IT, sales and marketing, business support, and executive management roles, mainly across UK professional…
Financial Health
HealthyHealthy · Hiring · 71% CAGR over 4y
Location
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Computed from 5 filingsProvides recruitment and contractor services for defence sector operations, supplying mechanics and technical personnel for aviation, land and marine equipment maintenance, along with logistics,…
Serves defence-sector organisations, military operators and prime contractors needing skilled personnel and support across aviation, land and marine programmes internationally.
Financial Health
StrongStrong · Growing, Hiring · 8% CAGR over 5y
Location
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Computed from 5 filingsProvides recruitment and executive search services for financial services and related sectors. Places professionals in governance, private equity, risk, compliance, finance, fintech, insurance, and…
Serves financial services, private equity, infrastructure and real assets, FinTech and insurance organisations hiring for governance, front office, risk, compliance, finance, cyber and data roles.
Financial Health
StableStable · Hiring · 9% CAGR over 4y
Location
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Computed from 3 filingsProvides recruitment and executive search services for the maritime, shipping, and energy sectors. Places candidates in shore‑based and offshore roles and offers contract staffing, crewing…
Serves employers and job seekers in maritime, shipping, cruise, superyacht, crewing, oil and gas, and renewable energy sectors, including shore-based, technical, commercial, executive and…
Financial Health
StableStable · -4% CAGR over 2y
Location
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Computed from 3 filingsProvides recruitment and talent search services for insurance, financial services, legal and change management sectors. Also advises firms on business growth, mergers and acquisitions, and offers…
Serves employers and professionals in general insurance, financial services, legal, risk and compliance, and change and transformation, including firms hiring talent or pursuing business growth and…
Financial Health
WeakWeak · 1% CAGR over 2y
Location
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Provides recruitment and staffing services, placing temporary and permanent workers for employers across sectors including warehouse and distribution, driving and transport, manufacturing, customer…
Serves UK employers needing temporary, permanent and onsite managed staffing, plus jobseekers, across warehouse and distribution, driving, manufacturing, engineering, hospitality, office, retail,…
Financial Health
N/AN/A
Location
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Computed from 5 filingsSupplies locum and permanent healthcare staff to NHS and private providers, including nurses, doctors, allied health professionals and domestic staff. Also provides managed staffing services and…
Serves NHS trusts and private healthcare providers across the UK, alongside nurses, doctors, AHPs and domestic healthcare workers seeking locum, permanent or international roles.
Financial Health
WeakWeak
Location
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Computed from 4 filingsProvides recruitment services for the construction and infrastructure sectors, placing temporary and permanent staff in civil engineering, construction, mechanical and electrical, renewable energy,…
Sells to businesses in civil engineering, construction, M&E, renewables and rail, especially main contractors and specialist subcontractors, and to skilled professionals seeking temporary or…
Financial Health
StrongStrong · Growing, Hiring · 14% CAGR over 3y
Location
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Computed from 5 filingsProvides recruitment services for the HVAC and facilities management sectors, placing engineers, technicians, managers and support staff in permanent, temporary and contract roles, and offering…
Serves facilities management, building maintenance and HVAC employers recruiting permanent, temporary and contract staff, alongside engineers, technicians, managers and support staff seeking roles…
Financial Health
HealthyHealthy · 1% CAGR over 4y
Location
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Computed from 3 filingsExecutive search and recruitment firm specialising in senior roles in corporate development and M&A, finance leadership, and strategy and transformation. Provides permanent executive search, interim…
Serves global corporates, private equity funds and portfolio companies seeking executive and interim hires in corporate development, M&A, finance leadership, strategy and transformation.
Financial Health
HealthyHealthy · Hiring · 7% CAGR over 2y
Location
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Computed from 3 filingsProvides executive search, recruitment, and consulting services for the life sciences and pharmaceutical sectors. Supports hiring and organisational advisory across biotechnology, clinical research,…
Serves life sciences and pharmaceutical companies, including biotech, medical device, CRO/CDMO and life science AI firms, working with HR leaders and hiring managers worldwide; also addresses…
Financial Health
StrongStrong · Growing, Hiring · 50% CAGR over 2y
Location
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Computed from 5 filingsProvides recruitment services supplying permanent and interim professionals for projects in the construction, civil engineering, data centre, power and energy sectors, connecting contractors and…
Serves employers and project teams in the civils, construction, data centre, power, energy and industrial sectors, primarily organisations hiring specialist permanent and interim technical…
Financial Health
HealthyHealthy · -4% CAGR over 5y
Location
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Computed from 4 filingsProvides recruitment services for technology and deep‑tech companies, placing professionals in permanent, contract and interim roles. Sources candidates for positions across areas including software…
Serves B2B technology and deeptech companies needing permanent, contract or interim talent, alongside tech professionals seeking roles in areas such as data, cloud, DevOps, software and business…
Financial Health
WeakWeak · -19% CAGR over 3y
Location
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Computed from 5 filingsProvides recruitment services for the life sciences sector, connecting candidates with biotechnology and pharmaceutical companies. Places professionals across drug discovery, development,…
Serves biotech and pharmaceutical employers across the UK, Europe and US, particularly teams hiring in drug discovery, development, commercialisation, manufacturing, clinical operations, quality,…
Financial Health
StableStable · -10% CAGR over 4y
Location
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Computed from 5 filingsProvides recruitment services for the life sciences sector, placing professionals in pharmaceutical, biotechnology and medical technology companies. Sources and screens candidates for roles in…
Serves pharma, biotech and med-tech employers, especially HR, recruitment and talent teams seeking scientific talent in clinical research, trials, quality assurance and pharmacovigilance; also…
Financial Health
StableStable · 0% CAGR over 4y
Location
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Computed from 5 filingsProvides recruitment and staffing services for engineering and manufacturing sectors, sourcing contract and permanent staff for roles in nuclear, defence, construction, energy, rail, automotive and…
Serves employers and jobseekers in engineering and manufacturing, with emphasis on nuclear, defence, aerospace, automotive, construction, energy and gas, rail and steel sectors.
Financial Health
StableStable · -71% CAGR over 4y
Location
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Computed from 4 filingsProvides recruitment and staffing services for architecture, engineering and construction (A/E/C) sectors. Sources and places professionals in roles across disciplines such as civil engineering, MEP,…
Serves A/E/C employers, particularly engineering firms in infrastructure, sustainability, MEP, civil, data centre, renewables and architecture sectors, alongside specialist technical candidates…
Financial Health
HealthyHealthy · Hiring · 91% CAGR over 3y
Location
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Computed from 5 filingsProvides specialist recruitment services for the legal sector, placing lawyers, solicitors, paralegals and in-house counsel into permanent, contract and temporary roles with law firms and corporate…
Serves UK and international law firms, in-house legal teams in financial services, commerce and industry, and legal professionals including lawyers, solicitors, paralegals and in-house counsel.
Financial Health
StableStable · Hiring · 5% CAGR over 4y
Location
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Computed from 5 filingsProvides recruitment and talent sourcing services for the energy and infrastructure sectors, focusing on transmission and distribution, critical power, water, wastewater, transportation and land…
Serves power-sector employers and professionals across North America and the UK, particularly in transmission and distribution, critical power, water/wastewater, transportation and land development…
Financial Health
StrongStrong · Growing, Hiring · 32% CAGR over 4y
Location
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Computed from 5 filingsProvides recruitment and workforce solutions for insurance, technology, and legal sectors. Sources and places professionals such as developers, solicitors, underwriters, analysts, and executives, and…
Serves employers in insurance, insurtech, technology and legal sectors, including law firms, in-house legal teams, MGAs, brokers and insurance providers, plus professionals seeking roles across the…
Financial Health
StrongStrong · Growing, Hiring · 17% CAGR over 4y
Location
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Computed from 5 filingsProvides IT recruitment and talent sourcing services for organisations hiring in cloud infrastructure, cybersecurity, enterprise applications, and AI and machine learning. Offers retained search,…
Serves businesses and organisations in Europe, the US and globally that need specialist IT talent across cloud infrastructure, cybersecurity, enterprise applications, AI and machine learning.
Financial Health
HealthyHealthy · Hiring · 13% CAGR over 4y
Location
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Computed from 5 filingsProvides executive recruitment and talent search services for the insurance and investment management sectors, placing professionals in areas such as finance, audit, risk, compliance, strategy, and…
Serves employers and senior professionals in global insurance, Lloyd’s, general and life insurance, investment management and asset management, with a focus on finance, strategy, audit, risk,…
Financial Health
HealthyHealthy · Hiring · 7% CAGR over 4y
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Computed from 5 filingsProvides recruitment services for engineering, manufacturing and technology roles, focusing on automotive, motorsport, aerospace and defence sectors. Also offers industry networking and investment…
Serves B2B employers in engineering, manufacturing and future technology, especially automotive, motorsport, aerospace and defence companies seeking talent, networks or sector investment…
Financial Health
StableStable · Hiring · 26% CAGR over 4y
Location
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Computed from 5 filingsProvides recruitment and executive search services for the design, property and construction industries, placing professionals in roles such as architecture, project management, estimating,…
Serves B2B employers in the design, property and construction sectors, including design-and-build, fit-out and refurbishment specialists, consultancies, main contractors and mixed-use developers.
Financial Health
HealthyHealthy · Hiring · 28% CAGR over 4y
Location
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Computed from 5 filingsProvides recruitment and executive search services, placing permanent and temporary staff across sectors including accountancy and finance, HR, technology, engineering and manufacturing, marketing,…
Serves employers hiring permanent and temporary staff, plus jobseekers, across Cambridge, Peterborough, Hertfordshire, Essex, Northampton and Milton Keynes, spanning finance, HR, IT, marketing,…
Financial Health
HealthyHealthy · -11% CAGR over 4y
Location
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Computed from 5 filingsProvides recruitment and staffing services for the creative industries and brand-led organisations, including permanent, temporary and interim hiring. Also offers recruitment process outsourcing,…
Serves UK creative-industry employers and brand-led businesses, including entertainment companies, social networks, media brands, sports bodies, retailers and digital technology providers seeking…
Financial Health
StableStable · -8% CAGR over 4y
Location
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Computed from 5 filingsProvides recruitment and staffing services, connecting employers with candidates for interim and permanent roles in accounting and finance, technology and digital, banking operations, and risk and…
Serves employers and job candidates in accounting and finance, technology and digital, banking operations, risk and compliance, with client focus on financial services and commerce and industry…
Financial Health
WeakWeak · -68% CAGR over 5y
Location
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Provides recruitment and talent sourcing services for life sciences and health technology organisations, placing professionals across research and development, data science, clinical and regulatory,…
Serves life sciences and health technology employers, including biotech, pharma, medical device and AI-led STEM businesses, plus professionals in R&D, clinical, regulatory, quality, manufacturing and…
Financial Health
N/AN/A
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Computed from 5 filingsProvides recruitment and talent services for the clean energy and climate technology sectors. Sources and places professionals in renewable energy, ESG, sustainability, grid infrastructure, energy…
Sells recruitment services to clean energy and climate-focused employers, from scaling startups to enterprises, across renewable energy, cleantech, manufacturing, ESG, green finance, grid/storage,…
Financial Health
StableStable · Hiring · 24% CAGR over 4y
Location
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Computed from 4 filingsProvides recruitment services focused on procurement, supply chain, logistics, materials management and commercial management roles. Offers permanent, interim, and contract recruitment, retained…
Serves UK employers hiring procurement, supply chain, logistics, materials management, supplier quality and commercial management professionals, including businesses needing permanent, interim,…
Financial Health
WeakWeak · -16% CAGR over 3y
Location
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Financial sub-scores
Computed from 3 filingsProvides specialist recruitment services for B2B events, business intelligence, intellectual property, and FMCG sectors. Focuses on placing senior and C‑suite professionals in roles such as sales,…
Serves hiring managers and employers seeking senior permanent talent, mainly C-suite and specialist roles, in B2B events, business intelligence, intellectual property, and FMCG sectors.
Financial Health
StableStable · -6% CAGR over 2y
Location
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Financial sub-scores
Computed from 4 filingsProvides recruitment services for the legal sector, sourcing and placing solicitors, paralegals and legal support staff for law firms. Offers candidate search, career placement and hiring support…
Serves law firms’ hiring teams and legal-sector candidates, with a client base spanning the country that includes Magic Circle and Legal 500 firms.
Financial Health
HealthyHealthy · Hiring · 26% CAGR over 3y
Location
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How Volcanic usage is detected
Company data
Detected companies are joined to UK Companies House records and XBRL accounts data. 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.
Detection
Firmbase crawls the public website of actively-trading UK companies and fingerprints the technologies present: tracking scripts, embedded forms, chat widgets, CMS markers and similar signatures. A company is included in this list when one or more of the technology's signatures are found on its site; closely-related variants of the same product are grouped under one name. Detection covers what is visible on the public web — a company using the technology purely internally, with no website footprint, will not appear. Counts are therefore a conservative floor, not a ceiling. B2B companies are identified using Firmbase's semantic classification of company activity, built from filings, websites and registered SIC codes rather than SIC codes alone. The detected counts and share figures on this page are computed within that sector cohort, so "share" always means share of B2B companies with a detectable system — not of all UK companies.
Freshness
Websites are re-crawled on a rolling basis and the underlying company data is refreshed from Companies House continuously; filings appear within days of submission. The list and its statistics are regenerated when the detected cohort moves meaningfully. You can see the last-updated timestamp near the top of the page.
Volcanic is a trademark of its respective owner. Firmbase is not affiliated with, sponsored by, or endorsed by the trademark owner.
UK B2B by Recruitment
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Frequently asked questions
How many UK B2B companies use Volcanic?
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