10 Best UK B2B Data Providers for Accuracy & ROI

Choosing a B2B data provider is one of the most important decisions a UK sales or marketing team will make. Get it wrong and you’re left with outdated contacts, wasted campaign budget and TPS complaints. Get it right and every list you buy pays for itself many times over.

Many “best data provider” lists online are dominated by large, US-headquartered platforms built for global prospecting. They’re useful if you’re selling into 50 countries, but if your business sells to other UK companies, a global-first platform often isn’t the best fit. UK company data, UK compliance rules (GDPR, PECR, TPS and CTPS) and UK decision-maker structures need a provider that specialises in this market specifically.

Below are 10 of the best UK-focused B2B data providers, starting with the one we’d argue is built most specifically for UK SMEs that want accurate, compliant, ROI-driven data.

1. Results Driven Marketing (RD Marketing)

Results Driven Marketing supplies UK B2B data lists and niche industry databases. Every record is GDPR-compliant and human-verified, giving 95%+ accuracy. Every phone number is checked against the TPS/CTPS registers so campaigns stay compliant and sales teams don’t have to worry about numbers they can’t legally dial.

Where RD Marketing differs from most providers on this list is specialisation and support. Rather than a one-size-fits-all database, RD Marketing builds niche industry lists with named, up-to-date senior decision-maker contacts, so campaigns reach the people who actually make purchasing decisions rather than a generic switchboard number or retired Director.

RD Marketing also takes a consultative approach. Instead of simply selling a list and moving on, the team works with clients to shape the right data strategy for their goals, sector and budget.

Additional Services

Unlike most of the providers below, RD Marketing offers services that go beyond the data itself:

• Automated Email Campaigns
• LinkedIn Lead Generation

Best for: UK SMEs that want accurate, niche, decision-maker-level data plus hands-on campaign support.

2. Marketscan

Marketscan is a long-established UK data provider with several decades in the market. It combines multiple UK data sources into one database and updates it monthly, aiming for strong deliverability across email, phone and postal campaigns.

Best for: Businesses that want a well-established, broad-coverage UK database with a long trading history.

3. Cognism

Cognism is one of the best-known names in B2B sales intelligence, with strong UK and European coverage alongside its global reach. It combines AI-driven data collection with human verification and is positioned mainly at enterprise and scale-up sales teams doing high-volume outbound.

Best for: Larger sales teams that need a global platform with solid European phone-verified coverage.

4. Corpdata

Corpdata specialises in building direct marketing lists for UK businesses, with a focus on tailoring data selections to specific campaign criteria rather than offering a fixed, off-the-shelf database.

Best for: Companies that want a bespoke list built around specific targeting criteria.

5. Direct Data Squad

Direct Data Squad is a UK data broker offering GDPR-compliant, tailored B2B lists. It positions itself around a consultative discovery process, where an account manager discusses campaign goals before building the list.

Best for: Businesses that want a fully custom list and a guided buying process.

6. 1 Stop Data

1 Stop Data differentiates itself by sourcing information directly from companies and executives rather than relying purely on web harvesting, which it positions as a more reliable and compliant approach to building UK business data.

Best for: Buyers who want data sourced directly rather than scraped from public web sources.

7. Selectabase

Selectabase is an established UK direct marketing data supplier and long-standing member of the Direct Marketing Association. Alongside B2B and B2C data lists, it offers TPS/CTPS screening, data cleansing and full mailing house services for direct mail campaigns.

Best for: Businesses running combined direct mail and data campaigns that want print, post and list-building in one place.

8. Lusha

Lusha is a widely used contact data platform with a simple interface and a Chrome extension for LinkedIn and web-based prospecting. It offers UK coverage as part of a broader international database and puts a strong emphasis on GDPR compliance.

Best for: Sales reps who want a lightweight browser tool for on-the-fly prospecting.

9. Kaspr

Kaspr is a prospecting tool built around LinkedIn integration, letting sales teams pull contact details directly from LinkedIn profiles into their outreach workflow.

Best for: LinkedIn-led sales teams that want contact enrichment built into their prospecting workflow.

10. The Lead Generation Company

The Lead Generation Company combines bespoke B2B data with integrated lead generation services, aiming to move clients beyond raw contact lists towards fuller campaign delivery and conversion.

Best for: Businesses that want data bundled with broader lead generation support.

Choosing the right provider for your business

Every provider on this list has strengths, but the right choice comes down to what you actually need: raw volume, a specific niche, a particular channel, or ongoing campaign support alongside the data itself.

If you’re a UK SME looking for accurate, human-verified, TPS/CTPS-checked data on named senior decision-makers in your target industry, backed by a team that will help you turn that data into results rather than just handing over a spreadsheet, that’s exactly where Results Driven Marketing focuses.

We supply maintained and structured B2B data designed to support email marketing, telemarketing, direct mail, and multi-channel lead generation campaigns.

Call 0191 406 6399 or email info@rdmarketing.co.uk to discuss your requirements.