UK B2B Data Providers: 9 Picks for the UK and Europe

Coverage by country varies for every provider, so test before you buy. Give the contact finder a name and a company from your UK target list, and it asks 25+ providers in sequence and verifies the work email it finds, inside a free Cleanlist AI workspace.

UK B2B data providers at a glance

Prices and claims come from each vendor's own page, read on November 10, 2026. Counts are each vendor's own figures.

1. Cognism: best for compliance-screened UK and European contacts

Cognism describes its data as European B2B data and prices it on request, on Standard and Pro plans with 5 seats each, where one credit reveals one contact and Pro adds on-demand mobile verification. Its compliance page is the most specific of any provider here. It says Cognism collects and shares data under the GDPR's legitimate interest basis, notifies business contacts that they are in its database within GDPR timeframes, screens phone data against 15 do-not-call lists including the UK's TPS and CTPS, and holds ISO 27001 and ISO 27701 certification and a SOC 2 Type II attestation. Our Cognism review and Cognism pricing guide go deeper.

Best for: teams whose reps call UK and European mobiles and want the screening done before the data arrives.

2. Kaspr: best for LinkedIn lookups priced in euros and pounds

Kaspr finds contact details from LinkedIn profiles through a Chrome extension, and its pricing page lets you pay in euros, pounds or dollars. The Free plan includes 15 email credits and 5 phone credits a month. Starter is €59 a user a month with unlimited B2B email credits and 100 phone credits, and Business is €99 with 200 phone credits and 200 direct email credits. Kaspr labels its plans "GDPR & CCPA aligned". Our Kaspr pricing guide covers the credit rules.

Best for: reps who build lists one profile at a time on LinkedIn or Sales Navigator.

3. Cleanlist AI (our product): best for paying only for verified results

Disclosure. We make Cleanlist AI. Its 98% verified email and 85% direct dial figures come from our own 500-lead benchmark, which named no other vendor.

Cleanlist AI runs waterfall enrichment across 25+ data providers in sequence and stops at the first deliverable result, at 1 credit per verified work email and 10 per phone number. A missed email or phone number costs nothing. Each provider covers some countries better than others, which is the reason a waterfall asks several in turn. Coverage still follows the providers and varies by country, and Cleanlist AI publishes no coverage figure for the UK or any other region, so run a sample of your own accounts before you commit. Its data sources page lists the providers it contracts with, and its data processing agreement is public.

4. Leadfeeder (formerly Dealfront): best for EU-hosted data with website visitors

Dealfront renamed itself Leadfeeder: same product, team and contracts, with its Target database now called Companies. It lists 60M companies and 400M verified contacts, says its data is hosted in the EU, and pairs the database with website visitor identification. Lite is free, Discover starts at $79 a month billed annually, and verified emails and phone numbers come with Activate, from $369 a month billed annually, in US dollars as the page showed them to our browser. Our Leadfeeder pricing guide covers every tier.

Best for: marketing and sales teams in Europe that want to see which companies visit their site and then reach the people there.

5. D&B Hoovers Essentials (UK): best for D&B company records on a small plan

Dun & Bradstreet sells a UK edition of D&B Hoovers Essentials at £99 a month plus VAT for 100 company credits and 100 business contact credits, or £599 a year plus VAT for 1,500 of each. D&B says its data covers over 600M organizations in over 250 markets. Our Dun and Bradstreet pricing guide covers the US edition and D&B's other products.

Best for: UK sales teams that want D&B's company records and contacts without an enterprise contract.

6. ZoomInfo: best for one large database for the US and the UK

ZoomInfo says it has verified data on 500M+ contacts and 100M+ companies, and its FAQ says it processes professional contact data under the GDPR's legitimate interest basis. It publishes no price. Our ZoomInfo pricing guide collects what buyers report paying.

Best for: larger teams that want one vendor for their US and UK accounts.

7. Apollo.io: best for small teams on a budget

Apollo says it has 240M+ contacts and 30M+ accounts, and its pricing page carries a "GDPR Compliant" label. The Free plan includes 900 credits a seat a year, and Basic is $49 a seat a month billed annually with 30,000 credits a seat a year. Apollo bundles sequences, so data and sending sit in one tool. Our Apollo pricing guide explains the credits.

Best for: founders and small teams that want low-cost data and outreach together.

8. Zeliq: best for pay-per-result enrichment and outreach in one tool

Zeliq runs waterfall enrichment across 40+ data providers, lets you search 450M+ prospects for free, and adds email, call and social sequences. Its FAQ describes the enrichment as working across the US, EMEA, LATAM and APAC, and says Zeliq is fully GDPR compliant. Pricing is published: Basic is free, Starter is $59 a user a month with 750 credits, a valid email costs 1 credit and a mobile number 10, and credits never expire.

Best for: small teams that want enrichment and sequences in one subscription.

9. Data HQ: best for a UK agency that runs the campaign for you

Data HQ is a UK B2B marketing data agency. It sells UK business data through Vista, connects that data to your CRM and marketing tools through an API called VistaConnect, cleans existing records with Revive and nurtures prospects with Dynamo. Its site shows no prices and offers a demo.

Best for: UK marketing teams that want data, cleansing and campaign help from one supplier.

Free UK company data: Companies House

Before you pay for company records, check the free one. Companies House registers company information and makes it available to the public, and its search covers company names, company numbers and officer names. Every private limited company must send its statutory accounts to Companies House, and small companies and micro-entities may send simpler accounts (GOV.UK, read November 10, 2026). It shows companies, their filings and their officers, and it does not list email addresses or phone numbers for officers. A sole trader is not a company and does not appear there, which matters for the email rules below.

What does UK law ask of B2B contact data?

The Information Commissioner's Office (ICO) enforces two laws that apply here: UK GDPR, for personal data, and PECR, for marketing by email, phone and text. The ICO marks its business-to-business guidance as under review after the Data (Use and Access) Act, so check the current page before a campaign. What follows summarizes the ICO's guidance and is not legal advice.

UK GDPR: a lawful basis, and telling people

The ICO says UK GDPR applies to B2B marketing whenever you process personal data, such as the name of the person you contact, or an email address that identifies them. The two lawful bases most relevant for B2B marketing are consent and legitimate interests, and where PECR does not require consent, legitimate interests is in many cases likely to fit, subject to the ICO's three-part test: a legitimate interest, processing that is necessary for it, and a balance against the person's rights. If you get personal data from a third party, such as a data provider, you must give the person privacy information within a reasonable period and no later than one month, unless an exception applies. Their right to object to direct marketing is absolute (ICO business-to-business marketing guidance, version of October 11, 2026).

The ICO adds a point about buying lists: whoever buys or sells a list of business contacts needs a lawful basis for it and must tell people their data was obtained.

PECR: email to companies and to sole traders

PECR's rule on marketing by electronic mail does not apply to corporate subscribers: companies, limited liability partnerships, Scottish partnerships and some government bodies. You may email or text them without consent under PECR, as long as you do not hide who you are and you give a valid address to opt out, and the ICO says you should honor their opt-outs. Sole traders and some other partnerships count as individual subscribers, so you need their consent or the soft opt-in, which applies only when you got their details during a sale or negotiation, you market your own similar products, and you offered an opt-out when you collected the details and in every message. If you cannot tell which kind of subscriber a contact is, the ICO says to treat them as an individual (ICO, version of October 11, 2026).

PECR: calls, the TPS and the CTPS

The TPS is the Telephone Preference Service, a central register of individuals who opted out of live marketing calls, and the CTPS is the Corporate TPS, which works the same way for companies and other corporate bodies. Sole traders and some partnerships register with the TPS, and companies register with the CTPS, so before B2B calls you need to screen against both registers and your own do-not-call list. You must also say who is calling and let your number display. Automated marketing calls need consent (ICO telephone marketing guidance, version of August 13, 2026, and business-to-business guidance, version of October 11, 2026).

What the Data (Use and Access) Act changed

The ICO's summary of the Act says it names direct marketing as an example of processing that may be necessary for a legitimate interest, and the standard legitimate interests tests still apply to it. The Act also brings PECR's enforcement powers and penalties into line with UK GDPR in most cases (ICO DUAA summaries, versions of September 4 and October 23, 2026). For a UK campaign, a PECR breach can now draw the same level of penalty as a UK GDPR breach.

Selling into the EU: what the European Commission says

For contacts in EU countries, the European Commission's guidance applies the same logic to bought data. Before you acquire a contact list, the seller must be able to show it collected the data in line with the GDPR and that it may be used for advertising. You must keep the list up to date, never send ads to people who objected, tell people at the latest in your first message that you hold their data for advertising, and follow the ePrivacy rules for email (European Commission, read November 10, 2026). Each EU country sets its own email marketing rules under the ePrivacy Directive, so check the rules of the country you send to.

How do you test a provider on your UK and European accounts?

Published accuracy figures, ours included, say little about the UK. Our three tests are first-party: the Cleanlist AI 500-Lead Enrichment Benchmark, our own test run on a 500-lead sample, returned 98% verified work emails and 85% phone numbers, and its sample was weighted toward North America. Our 100-lead test returned 98% verified email and 85% phone for the Cleanlist AI waterfall against roughly 80% and 45% for Apollo alone, and our March 2026 1,000-lead test, with no Cleanlist AI arm, found ZoomInfo returning a verified email for 84% of leads and a mobile number for 67%, against 78% and 41% for Apollo. The benchmark write-up has the method. Run your own test, country by country:

1. Pick 50 to 100 contacts you can check. Customers and partners in the UK and your target EU countries work best, since you know who still works where.
2. Run the same list through each finalist on the same day, without telling the vendor which rows you know.
3. Count by country. A provider strong in the UK can be weak in Germany or Spain, so score each country separately.
4. Count verified results only. An email that passes a mailbox check and a mobile that connects count; a match without verification does not.
5. Ask for the paperwork. The lawful basis, how and when people were told, the TPS and CTPS screening date for phone numbers, and a data processing agreement.

Our B2B data providers guide turns the results into a cost per accepted record.

Build a UK and Europe prospect list in Cleanlist AI, step by step

1. Pick the accounts. In Company Search, filter by location, industry, employee count and funding stage, at 0 credits.
2. Pick the people. Describe the buyer to Clu, Cleanlist AI's GTM agent, or set filters in People Search by title, seniority and location. It searches 1B+ profiles at 0 credits.
3. Get verified contact details. Each person runs through 25+ providers until one returns a deliverable result: 1 credit for a verified work email, 10 for a phone number, nothing for a miss.
4. Check before you contact. Remove sole traders from email sequences unless you have consent or a soft opt-in, and screen UK numbers against the TPS and CTPS before anyone calls.
5. Send or sync. From Starter, people can go into a Cleanlist AI sequence that sends from your own inbox. On Pro, records sync to HubSpot or Salesforce.

What it costs: every new workspace starts with a 14-day Pro trial with up to 3 seats and 250 credits, plus 100 more when you register with a work email, and a card is required. After that, Starter is $49 a seat a month with 750 credits a seat, Pro is $89 with 1,500, and the Free plan keeps 50 credits a month.

See pricing

Frequently asked questions

Is it legal to cold email businesses in the UK?

Yes, for corporate subscribers such as limited companies and LLPs, as long as you identify yourself, give a valid opt-out address and have a lawful basis under UK GDPR for the named person's data. Sole traders and some partnerships need consent or a soft opt-in. This summarizes the ICO's guidance and is not legal advice.

Do I need to screen against the TPS for B2B calls?

Yes. The ICO says to screen B2B call lists against both the TPS and the CTPS, because sole traders and some partnerships register with the TPS while companies register with the CTPS. Screen against your own do-not-call list too.

Does a GDPR-compliant provider make my outreach compliant?

No. A provider's compliance covers how it collected and supplies the data. Once you use the data, you are responsible for your own lawful basis, your privacy notice, honoring objections and PECR. Ask the provider for its paperwork, then document your own.

Which provider has the best UK mobile numbers?

The answer depends on your list, so test it. Cognism sells mobile verification on its Pro plan and screens numbers against the TPS and CTPS, which makes it a natural first test for UK calling. Run 50 known UK contacts through two or three providers and count the numbers that connect.

How do I know if a UK contact is a sole trader?

Search Companies House. A limited company or LLP will appear there with its company number, while a sole trader will not. If you still cannot tell, the ICO says to treat the contact as an individual subscriber and follow the stricter email rules.