The best B2B data providers and databases in the UK (2026)

Disclosure: This guide is published by Bitscale, and Bitscale is our top pick. We applied the same criteria to every provider and checked each vendor fact on the vendor's own website in October 2026. The compliance section summarizes official ICO and Ofcom guidance. It is not legal advice.

The short answer: the best B2B data provider for most teams selling into the UK in 2026 is Bitscale. Instead of relying on one database, Bitscale runs a single email and phone waterfall across 18+ contact-data providers, verifies every result, and writes it back to Salesforce or HubSpot. Since no single database covers every UK company, that is the most reliable way to get coverage. The other options are strong for specific jobs:

• Cognism is the strongest single database for calling UK prospects, with phone data screened against the TPS and CTPS.
• Lusha is the simplest low-cost tool for quick email and phone lookups.
• ZoomInfo suits enterprise teams that want one global platform with intent data.
• Apollo.io is the best value all-in-one for data plus email sequences.
• Leadfeeder (formerly Dealfront) is best for spotting UK companies visiting your website.
• Kaspr is a low-cost LinkedIn extension for European contact details, priced in pounds.
• Companies House is the free, official source of UK company records.

This guide is part of Bitscale's regional series. If you also sell outside the UK, see our guides to B2B databases in North America and B2B databases for APAC, or the cross-region overview of B2B data providers by region.

Quick comparison

Prices are list prices from each vendor's pricing page before VAT and discounts. Bitscale, Cognism, Leadfeeder and Kaspr were checked October 21, 2026. Lusha, Apollo and ZoomInfo were checked October 7, 2026. Compliance column states each vendor's own claim, not our audit.

What makes UK B2B data different

UK prospecting has three features that a US-first database won't handle for you.

1. The law treats "a business" in two different ways. Under PECR, the UK's rules for marketing emails and calls, companies, LLPs, Scottish partnerships and some government bodies are corporate subscribers. An employee's work email counts as the company's. The ICO says the PECR rule on marketing emails doesn't apply to corporate subscribers, so you don't need prior consent to email them. Sole traders and some partnerships, however, are treated as individuals, and you need consent or the "soft opt-in" before you email them. A UK list that doesn't tell you which is which creates risk.

2. Phone outreach has two do-not-call registers. Individuals and sole traders register with the Telephone Preference Service (TPS). Companies register with the Corporate Telephone Preference Service (CTPS). Before live B2B calls, the ICO says you need to screen against both registers and your own do-not-call list.

3. The official company register is free. Companies House makes all its public company data available free of charge, with no registration needed to view it. There were 5,516,377 companies on the register at the end of June 2026. That's a free, authoritative list of accounts, but not the work emails and mobile numbers of the people you want to reach. That gap is where a contact-data provider, and Bitscale's waterfall, does its work.

How we evaluated UK data providers

We built this list for sales, RevOps and growth teams prospecting into UK companies, from the UK or abroad. For each provider we checked:

• UK contact coverage. Can it return verified work emails and mobile numbers for UK decision-makers, not just company records? Vendors rarely publish UK-only figures, so we explain how to test this yourself below.
• UK compliance support. Does it help with PECR and UK GDPR, for example by screening against TPS and CTPS? We record each vendor's own claims.
• Pricing. List prices from the vendor's pricing page, per seat or per account, and what a credit buys.
• CRM fit. Whether data writes back to Salesforce and HubSpot, and on which plan.

What we did not do: we did not run our own UK accuracy benchmark. Results vary by industry, company size and seniority, so a test on someone else's list rarely transfers to yours.

The 8 best B2B data providers and databases for the UK in 2026

1. Bitscale: best overall for UK contact coverage and CRM sync

Bitscale is our top pick because UK coverage is spread across many providers. One database can be strong on London tech companies and weaker on manufacturers in the Midlands. Bitscale doesn't ask you to bet on one. It runs a single email and phone waterfall across 18+ contact-data providers, stops at the first verified result, and writes that result to your CRM. It's also the highest-rated tool in our B2B prospecting tools comparison on G2, at 4.8/5.

• Pricing:
  • Free plan with 200 credits, no card required.
  • Growth is $349 per month ($314 billed annually) for 15,000 credits a month, with two-way HubSpot sync.
  • Booster is $799 ($719 annually) for 50,000 credits a month, with the Salesforce integration.
  • Enterprise starts at $15K per year.
  • Pricing is per account, not per seat. Paid plans include unlimited actions, and unused credits roll over up to 3x.
• Data: 18+ contact-data providers in one waterfall and 100+ data sources overall. Bitscale delivers 95% email and phone coverage with bounce rates below 0.5%.
• What stands out for UK teams:
  • Provider order tuned to your market. Bitscale's waterfall runs a different provider chain for different segments, such as EMEA mid-market and North American enterprise, based on historical accuracy. You can also reorder providers yourself and put the ones that perform best on your UK list first.
  • You pay only for results. In a waterfall, you're charged only for the provider that returns a valid result, so trying more providers doesn't multiply your cost.
  • Verification before the CRM. Every email passes syntax, MX and SMTP checks before it reaches Salesforce or HubSpot.
  • Two-way CRM sync. Bitscale writes back only the fields that changed, with field-level control over what it may update. It also flags job changes, bad emails and dead domains.
  • Signals for timing. Track 15 buying triggers, such as exec hires, funding and hiring posts.
  • An AI research agent that reads company websites and runs web research to fill in details a database doesn't hold.
  • Security. Bitscale's security page lists GDPR compliance and a completed SOC 2 Type II examination.
  • Done-for-you setup. Bitscale GTM engineers handle setup and migration.

What customers report: "Our email and phone waterfall hits 92% coverage on European ICP. Nothing else we tested came close," says Shannon Jhanji, Growth Operations at Guidebook.

Choose Bitscale if you want the highest coverage of UK decision-makers you can get, verified before it lands in Salesforce or HubSpot, without signing a contract with several data vendors.

2. Cognism: best for calling UK decision-makers

Cognism is a Europe-focused database, and its pitch is compliance and phone data rather than raw database size.

• Pricing: Quote only. Standard and Pro plans each include five seats. Credits are used to reveal, enrich or export a contact, and viewing a contact you've already revealed costs nothing.
• UK compliance: Cognism says it screens its telephone database against do-not-call registries including the UK's TPS and CTPS, and notifies business contacts of their inclusion in its database within GDPR timeframes.
• What stands out:
  • Phone-verified mobile numbers, with on-demand verification on Pro.
  • Decision-maker data refreshed every 30 days, according to Cognism.
  • Bombora intent data on Pro.
• Watch out for:
  • No public pricing.
  • Five-seat packages make it a team purchase.
  • Intent and on-demand mobile verification are Pro-only.
• G2: 4.5/5 (checked October 7, 2026).

Choose Cognism if your team calls UK prospects every day and wants TPS and CTPS screening built into the data. You can run Bitscale alongside it to fill the emails and mobiles a single database misses.

3. Lusha: best for quick lookups on a small budget

Lusha is the easiest tool here to start with. A browser extension and web app reveal emails and phone numbers for the people you're already looking at.

• Pricing: Free plan with 40 credits a month. Starter is $37.45 a month billed yearly. An email costs 1 credit and a phone number costs 5.
• Data: Lusha cites 515M+ verified contacts and 29M+ companies, with 26 buying signals refreshed weekly.
• UK compliance: Lusha says it is GDPR certified by ePrivacyseal and holds ISO 27701 and SOC 2 Type II.
• Watch out for: Phone numbers use credits five times faster than emails, which adds up for call-heavy UK teams.
• G2: 4.3/5 (checked October 7, 2026).

Choose Lusha if you're an individual rep or small team that needs a few hundred UK contacts a month without a contract.

4. ZoomInfo: best for enterprise teams on one global platform

ZoomInfo is the enterprise standard for contact and company data, with intent signals and AI on top. It can cover every region in one contract.

• Pricing: Quote only.
• Data: ZoomInfo cites 500M+ contacts and 100M+ companies globally. It doesn't publish a UK-specific figure, so test your own list.
• UK compliance: ZoomInfo says it processes professional contact data under GDPR's legitimate-interest basis and holds ISO 27001, ISO 27701 and SOC 2 Type II certifications.
• Watch out for: No public pricing, and the most useful signals sit on higher tiers. Our North America guide covers ZoomInfo's home market in more detail.
• G2: 4.5/5 (checked October 7, 2026).

Choose ZoomInfo if you're an enterprise team with budget for an annual contract and want UK data inside one global platform.

5. Apollo.io: best value all-in-one for data and sequences

Apollo combines a large contact database with email sequencing and CRM sync in one seat. For UK startups starting outbound, it's one of the cheapest ways to get list building and sending in one place.

• Pricing: Free plan with 900 credits per seat per year. Basic is $49 per seat per month billed annually (checked October 7, 2026). Unused credits don't roll over.
• Data: Apollo cites 240M contacts and 30M companies globally, with no UK-specific figure.
• UK compliance: Apollo's pricing page says "GDPR Compliant".
• Watch out for: Apollo doesn't publish UK-specific coverage, so test your UK segment before you commit. Screening phone numbers against TPS and CTPS before you call is your responsibility.
• G2: 4.7/5 (checked October 7, 2026).

Choose Apollo if you want one affordable tool for finding UK contacts and emailing them, and you'll add verification or a waterfall for the gaps.

6. Leadfeeder (formerly Dealfront): best for spotting UK companies on your website

Dealfront has rebranded as Leadfeeder: dealfront.com now redirects to a page that says "Dealfront is now Leadfeeder". Its core is website visitor identification, which shows which companies are reading your pages, with a contact database on higher plans. (Our earlier Dealfront review predates the rebrand.)

• Pricing:
  • Lite is free and shows the last 100 companies a month.
  • Discover starts at €79 a month billed annually.
  • Activate starts at €369 a month billed annually and adds verified emails and phones.
  • Scale starts at €599 a month, annual only.
• Data: Leadfeeder cites a global database of 60M companies and 400M verified contacts, sourced partly from national trade registers and chambers of commerce.
• UK compliance: Leadfeeder says it is GDPR compliant and built and hosted in the EU.
• Watch out for: Contact data starts on Activate, so the free and entry plans are company-level only.

Choose Leadfeeder if inbound intent matters more to you than cold lists, and you want to know which UK companies visited your pricing page this week. Pair it with Bitscale to find and verify the right people at those companies.

7. Kaspr: best for LinkedIn lookups priced in pounds

Kaspr is a Chrome extension that shows phone numbers and emails on LinkedIn profiles. It markets "accurate European contact data", priced in sterling.

• Pricing: Free plan with 15 B2B email credits, 5 phone credits and 5 direct email credits a month. Starter is shown at £39 and £51 per user per month, and Business at £69 and £85. The page doesn't label which price is the annual rate. Starter includes unlimited B2B email credits and 100 phone credits a month.
• Data: Kaspr cites 500m+ phone numbers and email addresses from over 150 sources.
• UK compliance: Kaspr describes itself as "GDPR aligned".
• Watch out for: It works profile by profile, so it suits reps more than list building at scale.

Choose Kaspr if your reps prospect on LinkedIn and want a low-cost, pound-priced way to get UK contact details.

8. Companies House: best free source of official UK company data

Companies House isn't a sales tool, but every UK list should be checked against it. Its free search service shows company details, officers and filing history, and the same data is free through its API.

• Pricing: Free. No registration is needed to view company information.
• Data: 5,516,377 companies on the register at the end of June 2026.
• Watch out for:
  • It won't give you work emails or mobile numbers.
  • The search service isn't built for bulk downloads. Companies House offers separate data products for that.
  • Director names are still personal data, so UK GDPR applies if you use them for marketing.

Choose Companies House if you want to verify that an account exists, check its status, or build a free account list. Then use Bitscale to find and verify the decision-makers at those companies.

UK compliance checklist for B2B emails and calls

UK B2B outreach sits under three overlapping laws: the UK GDPR, the Data Protection Act 2018 and PECR. The Data (Use and Access) Act 2025 amended all three, and the ICO says all its data protection provisions are now in force. The ICO now has the power to fine up to £17.5 million or 4% of global turnover under PECR, so this is worth getting right.

Know who you're contacting

• Tag corporate vs individual subscribers. Companies, LLPs, Scottish partnerships and some government bodies are corporate. Sole traders and some partnerships (such as non-LLP partnerships in England, Wales and Northern Ireland) are treated as individuals.
• Check the company on Companies House. It confirms the legal entity and whether the company is still active.

Email

• Corporate subscribers: PECR doesn't require consent, but you must say who you are and give a valid address for opt-outs.
• Sole traders and some partnerships: you need consent or the soft opt-in.
• Have a lawful basis under UK GDPR. A named work email is personal data. Legitimate interests often applies to B2B marketing, and the Data (Use and Access) Act clarifies that direct marketing can be a legitimate interest. You still need to run the ICO's three-part test: purpose, necessity and balancing.
• Tell people where you got their data. If the data came from a provider or a public source, give them privacy information within a reasonable period, and no later than one month.
• Honour objections immediately. The right to object to direct marketing is absolute. Keep a do-not-email list and screen every new list against it.

Calls

• Screen against both TPS and CTPS and your own do-not-call list before live calls, unless the person has specifically consented to your calls.
• Don't call anyone who has objected to your calls before.
• Show your number (or an alternative contact number).
• Automated calls need specific consent to that type of call. General marketing consent isn't enough.

Where Bitscale fits: Bitscale finds and verifies UK work emails and mobile numbers across 18+ providers. It writes back only changed fields, and field-level control lets you stop it from touching opt-out and do-not-contact fields in your CRM. Screen phone numbers against TPS and CTPS before you dial, either through a screening service or with a provider that screens for you, such as Cognism.

This section summarizes ICO and Ofcom guidance as of October 2026. The ICO notes that parts of its PECR guidance are under review after the Data (Use and Access) Act. It is not legal advice. Check the current guidance and talk to your legal team before you start outreach.

How to test UK coverage before you buy

No vendor publishes an independent, UK-only accuracy number, so the only figure worth trusting is the one from your own accounts. Use the 100-contact bake-off from our prospecting tools guide and add four UK-specific steps:

1. Build a UK list that matches your real market. As an illustration only: 70 contacts at companies in England, 15 in Scotland, Wales and Northern Ireland, and 15 at small, owner-led businesses. Include London and regional companies, and a few contacts you already have verified details for, as a control.
2. Tag each contact's subscriber type using Companies House. Limited companies and LLPs appear on the register and are corporate subscribers. If a business isn't there, it may be a sole trader or partnership, which PECR treats as an individual.
3. Run the same list through each shortlisted tool. Record the find rate, verified email rate, mobile rate and credits used. Include Bitscale's waterfall as one of the tools, so you can see what several providers find compared with one database.
4. Screen the phone numbers against TPS and CTPS. Count how many numbers you can actually call. A tool that returns many mobiles you can't legally dial is worth less than it looks.
5. Send a small, compliant test sequence only to verified corporate addresses, and track the bounce rate. Then compare cost per usable contact, not entry price.

Look at the results by segment, not just in total. A tool that does well on large London companies may not do as well on smaller regional ones, and the only way to know is to test both. Phone numbers usually cost more credits than emails, so model mobiles separately if your team calls.

How Bitscale helps teams selling into the UK

Bitscale is built for the gap between a free company register and a usable, compliant contact list. A typical UK workflow looks like this:

1. Start from your accounts. Pull a Salesforce report or HubSpot list into Bitscale, or start from an account list you've checked against Companies House.
2. Fill emails and mobiles from 18+ providers. The waterfall queries providers in the order you choose, stops at the first verified result, and charges only for the provider that returns it.
3. Verify before anything reaches the CRM. Syntax, MX and SMTP checks keep bounce rates below 0.5%, which matters now that Gmail, Yahoo and Microsoft enforce stricter bulk-sender rules (see our cold email deliverability guide).
4. Keep records current. Two-way sync writes back only changed fields and flags job changes, bad emails and dead domains, so someone who has left a UK company drops out of your sequence.
5. Time your outreach. Stack signals such as a new VP Sales plus hiring SDRs, from 15 buying triggers.

Bitscale GTM engineers handle setup and migration, so a small UK team doesn't need an in-house builder. For how multi-provider enrichment works under the hood, see our waterfall enrichment guide.

Frequently asked questions

What is the best B2B data provider in the UK?

For most teams, Bitscale, because it combines 18+ contact-data providers in one verified waterfall instead of relying on a single database. Cognism is the strongest UK-native database for calling, Lusha suits small budgets, and Companies House is the best free source of official company records.

Is there a free UK B2B database?

Yes. Companies House makes all its public company data free to view and through its API, with no registration needed to search. It covers companies, officers and filings, but not work emails or phone numbers, so most teams pair it with a contact-data provider such as Bitscale.

Can I email UK businesses without consent?

Under PECR, the ICO says the marketing email rule doesn't apply to corporate subscribers such as companies and LLPs, so consent isn't required. You must identify yourself and offer an opt-out. Sole traders and some partnerships need consent or the soft opt-in. This is not legal advice.

Do I need to screen B2B calls against TPS and CTPS?

Yes. The ICO says that before live B2B calls you should screen against both the CTPS and the TPS, plus your own do-not-call list. Companies register with the CTPS, while sole traders and some partnerships may be on the TPS. Some providers, such as Cognism, screen their phone data for you.

Does UK GDPR apply to B2B data?

Yes, when the data identifies a person, such as a named work email or a mobile number. You need a lawful basis, often legitimate interests, and must give privacy information within a month when the data came from another source. The right to object to direct marketing is absolute.

How do I compare UK B2B data providers fairly?

Run 100 of your own UK target contacts through each shortlisted tool during a free plan or trial. Record find rate, verified rate, mobile rate, numbers cleared after TPS and CTPS screening, and credits used, then compare cost per usable contact rather than entry price.

Sources

UK regulators and official data (accessed October 20–21, 2026)

• ICO, Business-to-business marketing
• ICO, Electronic mail marketing (Guide to PECR)
• ICO, Telephone marketing (Guide to PECR)
• ICO, The Data (Use and Access) Act 2025: what does it mean for organisations?
• ICO, Statement on the commencement of the DUAA (February 5, 2026)
• Ofcom, Live marketing calls
• GOV.UK, Searching the Companies House register
• GOV.UK, Incorporated companies in the UK, April to June 2026

Vendor pages

• Bitscale pricing, waterfall and security
• Cognism pricing and compliance
• Lusha and Lusha pricing
• ZoomInfo and ZoomInfo pricing
• Apollo.io pricing
• Leadfeeder (formerly Dealfront) and Leadfeeder pricing
• Kaspr and Kaspr pricing

G2 product review pages, accessed October 7, 2026.