B2B Data Providers UK: 12 Best for 2026 [Tested]

I’ve spent the last six weeks running real test datasets through 12 B2B data providers serving the UK market. Some surprised me. A few legacy names showed up with stale UK SMB data, while a couple of newer platforms quietly out-matched them on GDPR posture and price. This is what I learned, ranked honestly, with the trade-offs every UK sales or RevOps team needs to know before they sign a contract. The headline finding? UK-native providers still hold the edge on Companies House depth. But the best global platforms now match them on coverage at a fraction of the enterprise price.

• Key Takeaways
• B2B Data Providers UK at a Glance
• How We Evaluated These Providers
• The 12 Best B2B Data Providers in the UK (Ranked)
• How to Choose the Right UK B2B Data Provider
• How to Use CUFinder’s Enrichment Platform in 5 Steps
• Frequently Asked Questions
• The Bottom Line

Key Takeaways

• CUFinder: API-first enrichment with a free tier and a $49/mo entry plan. Best for SMB and mid-market UK teams that want flexible, credit-based pricing without an annual contract.
• Cognism: London-HQ enterprise data with phone-verified Diamond Data and GDPR-native posture. Best for enterprise UK and EU sales teams comfortable with quote-only pricing.
• Lusha: Self-serve Chrome extension with a generous free plan and simple tiers. Best for SMB prospecting on a tight budget.
• ZoomInfo: The largest dataset in the category and the deepest US coverage. Best for enterprise GTM teams expanding into the UK.
• Apollo.io: All-in-one B2B data plus built-in sequencing. Best when you want prospecting and outreach in one tool.
• Kaspr: Cognism’s lower-priced sibling, built around a LinkedIn Chrome extension. Best for affordable UK and EU LinkedIn-first prospecting.
• Lead411: Bombora-powered intent triggers on a fair pricing curve. Best for mid-market teams that want growth signals baked in.
• The category truth: accuracy beats volume on UK SMB data, and free trials rarely include the records you actually want to test on.

B2B Data Providers UK at a Glance

Skim by the column that matters most. Pricing-sensitive teams should sort by Starting Price. If UK coverage matters most, see the Best For column for the UK-native providers (Cognism, Kaspr, Dealfront, DataGardener, Endole).

Provider	Starting Price	Free Tier/Trial	G2 Rating	Best For
CUFinder	$49/mo	Free tier	4.7 / 5 (900+ reviews)	API-first UK and global enrichment
Cognism	Custom (quote-only)	Free trial	4.6 / 5 (700+ reviews)	UK and EU enterprise sales
Lusha	$37/user/mo	Free plan	4.3 / 5 (1,500+ reviews)	SMB self-serve prospecting
ZoomInfo	Custom (quote-only)	Free trial	4.4 / 5 (8,500+ reviews)	US-led enterprise GTM
Kaspr	€45/mo (£39/mo tier)	Free plan	4.4 / 5 (600+ reviews)	LinkedIn-first UK and EU prospecting
Apollo.io	$0 / $59/user/mo	Free plan + trial	4.8 / 5 (7,500+ reviews)	All-in-one data + outreach
Lead411	$49/mo Basic Plus	Free trial	4.5 / 5 (450+ reviews)	Mid-market with intent triggers
Dealfront	€99/mo	Free plan + trial	4.3 / 5 (800+ reviews)	EU and UK account-based marketing
RocketReach	~$80/mo	Free trial	4.5 / 5 (640+ reviews)	Recruiter and sales contact discovery
UpLead	$74/mo	Free trial (5 credits)	4.7 / 5 (750+ reviews)	Verified-email guarantee buyers
DataGardener	£10/mo entry	Free trial	Not on G2	UK-specific business intelligence
Endole	Pay-as-you-go	Free company search	Not on G2	UK Companies House research

How We Evaluated These Providers

I scored each platform on a fixed rubric, then weighted criteria for a UK buyer. The aim was to separate “global database that happens to include the UK” from “platform built with UK data in mind.”

Criterion	What We Measured
UK Coverage	Match rate on UK Companies House-registered businesses
Data Accuracy	Email deliverability and phone connect rate on a 500-row test set
Pricing Transparency	Whether the vendor publishes pricing or requires a sales call
GDPR Posture	Whether the vendor is GDPR-native (EU HQ, DPA available, opt-out flow)
API Access	REST API on all plans, rate limits, throughput
CRM Integrations	Native HubSpot, Salesforce, Pipedrive integrations
Free Tier Value	What’s actually usable on the free tier

Our evaluation combines hands-on testing on trial accounts and free tiers, vendor pricing-page review, and aggregated G2 customer feedback. Pricing was verified on each vendor’s public pricing page in May 2026.

The 12 Best B2B Data Providers in the UK (Ranked)

1. CUFinder, Best Overall for Flexible, API-First UK Enrichment

CUFinder is the platform I kept returning to during testing, and the reason is honestly pretty simple. The catalog of enrichment services is broad: Company Enrichment, Contact Enrichment, LinkedIn Company URL Finder, Reverse Email Lookup, and Business Phone Finder. You can chain them inside the Enrichment Engine to turn a half-empty CSV into a fully-populated record in one flow. For UK domains, I saw match rates land in the high 80s on company data and the mid 70s on phone numbers. That’s solid for a non-enterprise platform.

What sets CUFinder apart is its credit-based pricing and the fact that the REST API is included on every plan, including the free tier. Most competitors gate API access behind their middle or top tier. So if you’re an early-stage team that needs to auto-enrich HubSpot or Salesforce records, you can start on $49/mo without negotiating an annual contract. The dataset spans 1B+ enriched people profiles and 85M+ company profiles, refreshed daily.

The trade-off is real. CUFinder’s niche-industry data (think small specialty consultancies or very local UK trade businesses) is lighter than what you’ll get from enterprise-only providers like ZoomInfo or Cognism. If you’re targeting deep, granular financial data on UK companies, CUFinder pairs well with a UK-native research tool like DataGardener for the extra depth.

Key Features

• Waterfall enrichment across multiple data sources for higher match rates
• REST API on every plan including the free tier, with documented rate limits
• Native CRM integrations for HubSpot, Salesforce, Zoho, Pipedrive
• Free tier with usable credits (not just a trial that times out after 7 days)
• Bulk CSV upload and column mapping in the Enrichment Engine
• GDPR-aware processing with opt-out workflow and DPA available
• Service catalog of 15+ enrichment endpoints (email, phone, LinkedIn, tech stack, revenue, subsidiaries)

Pricing

• Free: 50 credits/mo, API access included
• Growth: $49/mo, 1,000 credits/mo
• Premium: $129/mo, 3,000 credits/mo
• Unlimited: $299/mo, 10,000 credits/mo
• Enterprise: Custom, includes higher API throughput and SSO

2. Cognism, Best for UK and EU Enterprise Sales

Cognism is London-headquartered and built for the European market, and that origin shows in the data. The “Diamond Data” tier is manually phone-verified, and on my UK test set it returned the highest mobile connect rate of any provider tested, full stop. For enterprise sales teams in regulated industries, the GDPR-native posture is a real differentiator over US-first competitors. That posture includes Do-Not-Call screening across multiple EU markets and a full DPA on request. Add in Bombora-powered intent data and integrations with HubSpot, Salesforce, Outreach, and Salesloft, and it’s an obvious enterprise pick.

The trade-off is the contract. Cognism is quote-only, annual contracts only, and minimum-seat thresholds typically apply. SMB teams will get priced out fast. If you’ve got a 10+ person sales team and the budget is approved, Cognism is the cleanest UK enterprise option. Otherwise, Kaspr (their lower-priced sibling) is the smarter starting point.

Key Features

• Diamond Data: manually phone-verified mobile numbers for higher connect rates
• Do-Not-Call screening across multiple EU jurisdictions
• GDPR-native with full DPA and opt-out workflow
• Native integrations: HubSpot, Salesforce, Outreach, Salesloft, Gong
• Intent data: Bombora-powered topic and account-level signals
• Chrome extension for LinkedIn and Sales Navigator prospecting

Pricing

• Custom quote only. Annual contracts. Per-seat minimums typically apply. Pricing is opaque, but most reviews suggest entry starts around $15,000/year for a small team.

3. Lusha, Best for SMB Self-Serve Prospecting

Lusha earned its market share with a single excellent product decision: the Chrome extension. Click any LinkedIn profile, and Lusha pulls the contact’s email and phone right into the sidebar. It’s frictionless, the free plan is generous (5 credits a month, refreshed monthly), and the paid tiers stay self-serve with credit-card checkout. Founded in 2016 in New York and Tel Aviv, Lusha is GDPR-compliant, SOC 2-certified, and ISO 27001-certified.

The trade-off shows up at scale. Lusha’s database is smaller than the enterprise platforms, and on UK SMB targets the coverage thinned out compared to Cognism or DataGardener. Credits also burn faster than you’d expect: one contact reveal can use multiple credits depending on whether you want email, mobile, or both. For a small SDR team running 30 to 50 LinkedIn-sourced lookups per rep per week, Lusha is genuinely great. For a team running thousands of records through a CSV, the credit math gets painful fast.

Key Features

• Chrome extension for one-click LinkedIn contact pulls
• Bulk email finder for CSV uploads
• GDPR-compliant, ISO 27001, SOC 2 Type II
• CRM integrations: HubSpot, Salesforce, Zoho, Pipedrive
• Team workflow features including shared lists and credit pooling

Pricing

• Free: 5 credits/mo
• Pro: $37/user/mo, 40 credits
• Premium: $69/user/mo, more credits and team features
• Scale: Custom, with API access and higher credit allotments

4. ZoomInfo, Best for US-Led Enterprise GTM Expanding to UK

ZoomInfo is the giant of the category. Headquartered in Vancouver, Washington, it sits on 300M+ profiles and 100M+ company records. The platform adds intent data, ABM tooling, Conversation Intelligence (via the Chorus acquisition), and WebSights visitor de-anonymization. For enterprise GTM teams that need everything in one stack, the platform is hard to beat on breadth.

The catch is twofold. First, ZoomInfo is expensive. Most reviews put entry packages at around $15,000 a year for three seats and 5,000 credits, climbing fast from there. Second, the UK SMB coverage is noticeably thinner than UK-native providers. ZoomInfo is at its best on US enterprise data; on UK mid-market and below, I’d take Cognism or even CUFinder over it. If you’re a US enterprise expanding internationally and you already have ZoomInfo, it’s perfectly serviceable for UK research. But you wouldn’t choose it for a UK-only motion.

Key Features

• Massive database: 300M+ profiles, 100M+ company records
• Intent signals and topic-level buying intent
• WebSights: anonymous visitor identification
• Conversation Intelligence via Chorus
• Workflow automation and ABM tooling
• Security: SOC 2, ISO 27001, GDPR-compliant (US-first posture)

Pricing

• Custom quote only. Typically starts around $15,000/year for 3 seats with 5,000 credits. Annual contracts, no self-serve tier.

5. Kaspr, Best for Affordable LinkedIn-First UK and EU Prospecting

Kaspr was founded in Paris in 2018 and acquired by Cognism in 2022. That means it now sits on the same compliance infrastructure as its enterprise sibling but at a fraction of the price. The hero feature is the LinkedIn Chrome extension: click a profile, get the phone and email, push to your CRM. Free-plan credits sit at 5 phone credits a month, which is just enough to evaluate it.

The trade-off is product polish. Kaspr’s dashboard feels a step behind Cognism’s and a bit clunky if you’re running heavy daily prospecting workflows. Support response times can also lag during peak hours. But on price-to-data-quality ratio for UK and EU prospecting, Kaspr is one of the best buys in the category right now. Especially good for SDR teams that prospect primarily through LinkedIn Sales Navigator.

Key Features

• LinkedIn Chrome extension for one-click prospecting
• Phone and email enrichment with EU-strong coverage
• GDPR-compliant via Cognism’s infrastructure
• CRM integrations: HubSpot, Salesforce, Pipedrive, Zapier
• Free plan with 5 phone credits per month

Pricing

• Free: 5 credits
• Starter: €45/mo, 50 credits (UK tier from £39/mo)
• Business: €95/mo, more credits and team features
• Organization: Custom

6. Apollo.io, Best All-in-One Sales Engagement Plus Data

Apollo.io was founded in San Francisco in 2015. It has grown into the all-in-one platform many SMB and mid-market teams now use as their entire outbound stack. Inside the product, you get a B2B database (275M+ contacts) with email sequencing, AI features, a dialer, and meeting scheduling. Free-plan access is genuinely useful: 60+ filters, basic sequencing, and a real number of credits each month.

The trade-off is data quality unevenness. Apollo’s UK coverage is moderate, not deep, and on my test set I saw more stale records than I’d want on a high-priority outbound list. The sequencing tool itself is occasionally buggy. The learning curve on the platform is real: there’s a lot here, and onboarding takes a couple of weeks. But if you want one tool instead of three, and you’re operating on US-skewed targets, Apollo is the strongest one-stop in the category.

Key Features

• 275M+ contacts in the database
• Built-in email sequencing and AI Copilot
• 65+ filters for prospect search
• Native integrations: HubSpot, Salesforce, LinkedIn, Outreach, Salesloft
• Free plan with usable credit allotment
• Dialer and meeting scheduling included on paid plans

Pricing

• Free
• Basic: $59/user/mo
• Professional: $99/user/mo
• Organization: Custom (typically $149/user/mo+)

7. Lead411, Best Mid-Market with Intent Triggers

Lead411 has been around since 2001 and quietly carved out a strong mid-market niche by pairing fair pricing with Bombora-powered growth intent signals. The “growth intent triggers” feature flags companies showing buying signals (hiring sprees, funding rounds, leadership changes), which is genuinely useful for an SDR team prioritizing accounts.

The trade-off is product polish and international data. Its interface looks dated next to Apollo or Cognism, and international (including UK) coverage is lighter than what you’ll find on EU-native platforms. If your target market is US mid-market and you want intent data without paying ZoomInfo prices, Lead411 punches above its weight. For UK-only motions, look elsewhere.

Key Features

• Bombora-powered intent triggers for growth signals
• Unlimited downloads on top tiers
• Direct dial phone numbers with verification
• CRM integrations: HubSpot, Salesforce, Zapier
• Email finder with verification

Pricing

• Free trial
• Basic Plus: $99/mo
• Pro with intent: $1500/mo
• Enterprise: Custom

8. Dealfront, Best for EU and UK Account-Based Marketing

Dealfront was formed by the 2022 merger of Echobot (German B2B data) and Leadfeeder (Finnish web visitor identification). It now operates from Karlsruhe with a strong EU and UK regulatory focus. The product combines a clean EU B2B database with website visitor identification, ABM scoring, and CRM integration. If your motion is account-based and UK-focused, Dealfront’s combination of compliance posture and ABM tooling is unique in the category.

The trade-off shows up in two places. Filtering out ISPs, bots, and irrelevant visitors from the Leadfeeder side takes some setup, and the pricing scales quickly with traffic volume. For a small site getting 5,000 visitors a month, Dealfront is fine. For an enterprise site getting 500,000, the bill climbs fast.

Key Features

• Website visitor identification (Leadfeeder heritage)
• EU B2B database (Echobot heritage)
• Account-based scoring and ABM workflows
• CRM integrations: HubSpot, Salesforce, Pipedrive
• GDPR-compliant by design

Pricing

• Free plan
• Basic: €99/mo (up to 50 identified companies)
• Premium: €299/mo
• Custom enterprise

9. RocketReach, Best for Recruiter and Sales Contact Discovery

RocketReach was founded in San Francisco in 2015 and has built a particularly strong reputation among recruiters as well as sales teams. The dataset spans professional and personal email coverage (handy for recruiter outreach), and the Chrome extension makes one-off contact lookups fast. Contact verification is solid, and integrations with Salesforce, HubSpot, and Outreach are native.

The trade-off is pricing for individuals and small teams. RocketReach starts around $80/mo for Essentials and climbs steeply for higher credit allowances, so SMB and solo users often hit the limits faster than expected. Data accuracy is also more variable than the top of the category, with stale records appearing more often than I’d like on my test set.

Key Features

• Chrome extension for fast contact discovery
• Contact verification with real-time checks
• CRM integrations: Salesforce, HubSpot, Outreach
• Personal and professional email coverage
• Bulk lookup and CSV upload

Pricing

• Essentials: ~$80/mo
• Pro: ~$150/mo
• Ultimate: ~$300/mo
• Custom enterprise

10. UpLead, Best for Verified-Email Guarantee Buyers

UpLead is US-based, founded in 2017, and has built its positioning around one promise: real-time email verification with a 95%+ accuracy guarantee. If a bad email gets through, you get the credit back. That guarantee is unusual in the category and a genuine differentiator for teams burned by bounce rates on past list buys. UpLead also offers technographic filters, which is useful if you’re prospecting by tech stack.

The trade-off is credit limits on lower tiers. The free trial gives you just 5 credits, and the Essentials plan at $74/mo includes a credit allotment that runs out fast during heavy prospecting. Direct-dial phone numbers also occasionally turn up outdated, particularly on UK records. For a team prioritizing email deliverability above everything else, UpLead is a smart pick. For phone-heavy workflows, look at Cognism or Kaspr instead.

Key Features

• 95%+ email accuracy guarantee with credit refund on bad data
• Technographic filters for tech stack prospecting
• CRM integrations: HubSpot, Salesforce, Pipedrive, Zapier
• Real-time verification on every contact pull
• Chrome extension

Pricing

• Free trial: 5 credits
• Essentials: $74/mo
• Plus: $149/mo
• Professional: Custom

11. DataGardener, Best UK-Native Business Intelligence Provider

DataGardener is London-headquartered and built around deep integration with UK Companies House data. Founded around 2015, it’s the most affordable UK-native option in the category, with an entry tier from just £10/mo. Coverage of UK director networks, B2B credit scoring, and property ownership data is unmatched outside of dedicated company-research tools.

The trade-off is scope and polish. DataGardener is UK-only, the interface feels dated compared to global tools like Apollo or CUFinder, and it isn’t listed on G2 (which makes social-proof checking harder). It’s also more research-tool than sales-enrichment-API. The workflow is best for analysts and BD teams researching specific accounts, less for SDR teams pumping CSVs through bulk enrichment. Pair it with a global enrichment tool for the best of both.

Key Features

• UK Companies House data with real-time updates
• Director networks and connected-officer mapping
• B2B credit scoring for risk assessment
• Property ownership data for verticals that need it
• HubSpot and Salesforce integration

Pricing

• From £10/mo entry tier
• Tiered packages for power users and larger teams

12. Endole, Best for UK Company Financial and Credit Research

Endole is London-headquartered and founded around 2014. It’s the platform UK analysts and BD professionals reach for when they need deep financial detail on a UK business. The Companies House integration is real-time, the credit reports are robust, and the free company-search tool is genuinely useful for one-off lookups.

The trade-off is fit. Endole is a research tool, not an enrichment API. The pricing model is largely pay-as-you-go on individual reports, with a Plus subscription for power users. It isn’t built for the high-volume CSV enrichment workflows that drive most SDR teams. If you need to research a specific UK target account in depth, Endole is excellent. If you need to enrich 5,000 UK records overnight, look elsewhere.

Key Features

• Real-time UK Companies House data
• Credit reports for risk and financial health
• Financial reports with multi-year history
• Director networks and group structures
• Free basic company search

Pricing

• Pay-as-you-go reports
• Plus subscription for power users
• Custom for enterprise research needs

How to Choose the Right UK B2B Data Provider

Before you sign anything, run through these five questions in order. They’ll narrow 12 options down to one or two genuine fits.

1. Are you UK-only or going global? UK-only motions are best served by DataGardener, Endole, or Cognism. Global motions with strong UK coverage point to CUFinder, Cognism, or Kaspr.
2. SMB self-serve or enterprise contract? SMB and mid-market teams should look at CUFinder, Lusha, Kaspr, and Apollo, all of which let you pay by credit card without a sales call. Enterprise teams (10+ seats, regulated industry, annual contracts welcomed) belong on Cognism or ZoomInfo.
3. Do you need an API? Most teams now do, for CRM auto-enrichment or for piping data into a sequencer. CUFinder, Cognism, Apollo, UpLead, and RocketReach all offer REST APIs. Dealfront and Endole are limited on this front.
4. Do you want enrichment plus outreach in one tool? If yes, Apollo is the cleanest one-stop. If no, pick a pure data platform (CUFinder, Cognism, Kaspr) and pair it with your existing sequencer.
5. How mature does your compliance need to be? EU-native vendors (Cognism, Kaspr, Dealfront, DataGardener, Endole) generally have stronger GDPR posture out of the box. US-first vendors are GDPR-compliant on paper, but the operational maturity varies. For tightly regulated UK industries (financial services, healthcare, public sector), favor EU-native.

How to Use CUFinder’s Enrichment Platform in 5 Steps

Once you’ve chosen CUFinder, the workflow inside the dashboard is fast. Here’s the five-step path most teams take from raw data to enriched records.

1. Pick the enrichment service. Open the CUFinder dashboard and select the service you need. Common picks include Contact Enrichment, Company Enrichment, LinkedIn Company URL Finder, or Reverse Email Lookup.
2. Upload your Excel or CSV. Drag in your file of UK domains, company names, or contact records. The Enrichment Engine accepts both formats and handles files up to several thousand rows.
3. Map your columns. Tell CUFinder which column holds the input the service expects (a domain, a company name, a full name, or an email, depending on which service you picked in step 1). The mapping interface is drag-and-drop.
4. Run the service. Click Run. CUFinder processes the rows against its licensed B2B dataset and enriches each one in turn. For a 1,000-row file, expect a few minutes.
5. Download or push to CRM. Export the enriched file as Excel or CSV, or push the records directly into HubSpot, Salesforce, Zoho, or Pipedrive via native integration. Done.

Frequently Asked Questions

What is the best B2B data provider in the UK?

The best B2B data provider in the UK depends on your team size and use case. CUFinder works for flexible API-first SMB and mid-market enrichment, Cognism for enterprise UK sales, and Kaspr for affordable LinkedIn-first prospecting. For UK-only research workflows, DataGardener and Endole have deeper Companies House integration than any global platform. There’s no universal winner. Match the provider to your motion, not to G2 review counts.

Are UK B2B data providers GDPR-compliant?

Reputable UK B2B data providers are GDPR-compliant, but compliance maturity varies. EU-native vendors like Cognism, Kaspr, Dealfront, DataGardener, and Endole generally have stronger out-of-the-box GDPR posture than US-first vendors. Specifically, EU-native providers screen against Do-Not-Contact lists across multiple EU jurisdictions and offer full DPAs by default. US providers comply on paper but operational maturity varies. Always request a DPA before signing and ask about opt-out handling.

Is there a free B2B data provider for UK companies?

Yes. CUFinder, Apollo.io, Lusha, Kaspr, and Dealfront all offer free tiers or generous trials, and Endole offers free basic UK company search via its Companies House integration. CUFinder’s free tier includes API access, which is unusual in the category. Lusha’s free plan gives you 5 credits a month, refreshed monthly. The free tiers won’t replace a paid plan for serious prospecting, but they’re more than enough to evaluate fit before paying.

How accurate are UK B2B data providers?

Top UK B2B providers report 90 to 99% email accuracy on their verified tiers. But real-world accuracy on UK SMB data typically lands in the 70 to 85% range, depending on freshness and the company’s online footprint. Larger, well-documented UK enterprises (FTSE listed, multi-location, public website) hit the high end. Smaller specialty firms, sole traders, and recently-formed limited companies sit lower. Always test on your own data before committing to an annual contract.

Which B2B data provider has the best UK coverage?

Cognism leads on UK phone-verified data via its Diamond Data tier, while DataGardener and Endole have the deepest UK Companies House coverage for company-level enrichment. For balanced UK plus global coverage on a flexible plan, CUFinder is the strongest pick. For LinkedIn-sourced UK prospecting at a lower price than Cognism, Kaspr is the right call. The answer really depends on whether you need phone-verified contacts, deep company financials, or balanced general coverage.

Do UK B2B data providers offer API access?

Most major UK B2B data providers offer REST API access. CUFinder includes API on every plan, while Cognism, ZoomInfo, Apollo, UpLead, and RocketReach include API on mid-tier and above. API access is now table stakes for any team that auto-enriches CRM records or pipes data into a sequencer. Watch for rate limits and pricing model. Some providers charge per API call separately from regular credits, which can change the total cost meaningfully.

The Bottom Line

For most UK teams, the answer is straightforward. CUFinder is the strongest pick for flexible, API-first SMB and mid-market motions that need real UK coverage without an enterprise contract. Cognism wins for enterprise UK and EU sales teams who can absorb annual contracts and quote-only pricing. Kaspr is the smart compromise for affordable LinkedIn-first prospecting with strong compliance posture. DataGardener and Endole own the UK-only research and Companies House niches. Start with CUFinder’s free tier to test API enrichment on your own UK data before committing to any of them.