10 Best B2B Data Providers In The UK

The UK B2B data market is crowded with providers making bold claims about accuracy, coverage, and compliance. Some deliver on their promises. Many don’t.

Choosing the wrong provider doesn’t just waste budget – it damages your brand reputation when your sales team repeatedly contacts the wrong people.

This guide reviews the 10 best B2B data providers operating in the UK right now, based on data accuracy, compliance, breadth of coverage, and real-world performance.

1. The Lead Generation Company

Location: London, Glasgow, Manchester
Specialisation: Bespoke B2B data with integrated lead generation
Website: www.theleadgenerationcompany.co.uk

The Lead Generation Company stands apart from traditional B2B data providers by offering something far more valuable than contact lists – they deliver completely bespoke, verified data as part of an integrated lead generation service that actually produces results.

What makes them different?

Unlike database providers that sell you access to millions of records and leave you to figure out which ones matter, The Lead Generation Company builds custom datasets specifically matched to your ideal customer profile. Every single contact is researched, verified, and qualified before it reaches your team.

The 98% accuracy guarantee

Data accuracy isn’t aspirational at The Lead Generation Company – it’s guaranteed. Their 98% accuracy commitment covers company names, contact names, job titles, direct dial numbers, email addresses, and company information. This industry-leading guarantee reflects their rigorous verification process.

Why choose The Lead Generation Company?

• Industry-leading 98% data accuracy guarantee
• Bespoke data built specifically for your ICP (not generic database access)
• Integrated lead generation services that actively work with the data
• 100% UK-based research and verification
• Full GDPR and PECR compliance built into every process
• Proven track record with 80% lead-to-customer conversion rates

2. Cognism

Location: London
Specialisation: GDPR-compliant B2B data with Diamond Data® verification
Website:https://www.cognism.com/

Cognism is known for its strong focus on GDPR compliance and phone-verified contact data. Their proprietary Diamond Data® system provides phone-verified mobile numbers with 87% accuracy, and they check data against 13 global Do-Not-Call lists. The platform integrates with popular CRMs and includes intent data partnerships through Bombora.

Best for: Enterprises requiring verified phone data across multiple international markets with strict GDPR compliance needs.

3. Marketscan

Location: Chichester

Specialisation: Multi-source UK B2B data and database cleansing

Website:https://www.marketscan.co.uk/

Marketscan is an award-winning provider with over 40 years of experience in the UK B2B data market. Their proprietary Megabase™ system sets them apart by blending five of the top UK data sources into a single, comprehensive database of 7 million decision-makers.

Unlike static lists, their data is rigorously updated and quality-checked every month to provide some of the highest deliverability warranties in the industry. They offer a consultative approach, providing not just raw data but also database cleansing, customer analysis, and email marketing services.

Best for: UK-focused businesses requiring high-volume, multi-source data validated monthly with a strong emphasis on deliverability and data health.

4. Corpdata

Location: UK-based
Specialisation: Direct marketing data for specific UK sectors
Website:https://www.corpdata.co.uk/

Corpdata has established itself as a specialist provider of UK B2B marketing data with particular strength in IT, telecoms, construction, and fleet sectors. Their data is researched in-house and updated twice yearly, maintaining an average record age of 94 days.

Best for: Businesses targeting specific UK sectors (particularly IT, telecoms, construction, or fleet) where deep vertical coverage matters.

5. Experian UK

Location: Nottingham (UK HQ)
Specialisation: Business information and B2B marketing data
Website:https://www.experian.com/business-information/b2b-data-insights/

With a database covering over 5.7 million UK companies, Experian offers comprehensive firmographic data, financial information, and contact details for businesses across all sectors.

Their BusinessView platform provides access to hundreds of searchable variables and attributes, enabling businesses to create highly targeted prospect lists.

Best for: Businesses requiring comprehensive UK business data with strong financial and credit risk information alongside marketing contacts.

6. Dun & Bradstreet UK

Location: Marlow, Buckinghamshire
Specialisation: Business intelligence and commercial data
Website:https://www.dnb.co.uk/

Dun & Bradstreet UK provides comprehensive business intelligence covering millions of UK companies. With over 180 years of experience in business data, D&B’s proprietary D-U-N-S Number system provides unique identifiers for businesses worldwide. Their Risk and Compliance solutions help businesses identify and assess commercial relationships.

Best for: Enterprises requiring detailed financial risk data alongside sales and marketing contact information for informed decision-making.

7. Creditsafe UK

Location: Cardiff (UK HQ)
Specialisation: Business intelligence and credit information
Website:https://www.creditsafe.com/gb/en.html

Creditsafe UK is one of Europe’s largest providers of business intelligence, offering real-time access to company information on over 6 million UK businesses. They provide detailed company reports, credit scores, and contact data.

Their platform combines credit risk information with sales intelligence tools, helping businesses identify prospects while assessing their financial stability.

Best for: Businesses wanting to combine credit risk assessment with sales prospecting to ensure they target financially stable prospects.

8. Lusha

Location: Global with UK focus
Specialisation: Simple B2B prospecting with GDPR compliance
Website:https://www.lusha.com/hp/

Lusha provides B2B contact data with a focus on ease of use and GDPR compliance. Their Chrome extension supports LinkedIn and web prospecting, offering direct dials and verified emails for decision makers.

Best for: Small to mid-size businesses wanting simple, compliant contact data without complex platform requirements.

9. InfobelPRO

Location: Europe-wide coverage including UK
Specialisation: Comprehensive firmographic and technographic data
Website:https://www.infobelpro.com/

InfobelPRO offers coverage of over 8.6 million UK businesses and more than 370 million worldwide. They specialise in firmographic data, contact data, corporate linkage, and technographic information.

Their platform provides API-ready integrations and advanced filtering tools, making it particularly suitable for data enrichment, account-based marketing, and industry-specific segmentation projects.

Best for: Data-driven teams requiring comprehensive firmographic data and API integration for enrichment projects.

10. DataGardener

Location: UK-based
Specialisation: Financial data and credit risk information
Website:https://datagardener.com/

DataGardener specialises in company financials, credit risk assessment, and business insights for UK companies. Their platform offers advanced filtering for prospecting and due diligence, making it valuable for finance, compliance, and sales enablement teams needing financial context alongside contact information.

Best for: Businesses requiring financial and credit data alongside contact information for risk-aware prospecting and account selection.

How to Choose the Right B2B Data Provider

Now that you’ve seen the options, how do you make the right choice? Consider these critical factors:

Data Accuracy and Verification

• What’s their stated accuracy rate, and do they guarantee it?
• How frequently is data verified and updated?
• What verification methods do they use (telephone, email, automated)?

UK Coverage and Compliance

• Is their data primarily UK-focused, or is the UK an afterthought to US coverage?
• Are they fully compliant with UK GDPR, PECR, and the Data (Use and Access) Act 2025?
• Do they understand UK business culture and decision-making structures?

Providers based outside the UK often have weaker coverage of UK SMEs and may not fully understand UK compliance requirements. Look for providers with UK headquarters and UK-based verification teams.

Bespoke vs Database Access

• Do they build custom datasets matched to your ICP, or do they sell access to pre-existing databases?
• Can they research contacts that aren’t already in their system?

Generic database access forces you to search through millions of irrelevant records. Bespoke data providers build datasets specifically for your requirements, dramatically improving relevance and reducing wasted effort.

Data Depth and Coverage

• Do they provide just basic contact details or comprehensive firmographic data?
• Do they include direct dial numbers or just switchboard numbers?
• Are email addresses verified as accepting third-party communications?

Surface-level data (company name, switchboard number) is easy to find but difficult to convert. Deep data (direct dials, verified emails, decision-maker details) requires more research but delivers far better results.

Integration and Delivery

• Can they integrate with your CRM?
• How is data delivered – one-time export, API access, or ongoing feeds?
• Do they offer data enrichment for existing CRM records?

Seamless integration ensures data flows directly into your existing workflows without manual administration. API access enables ongoing enrichment, whilst one-time exports require manual updates.

Integrated Services

• Do they just provide data, or do they help you use it effectively?
• Can they execute outbound campaigns using the data they provide?
• Do they offer lead qualification services?

The most successful businesses recognise that data alone doesn’t generate revenue – it’s what you do with the data that matters. Providers offering integrated lead generation services deliver far better ROI than those selling raw contact lists.

Ready To Work With The UK’s Most Accurate B2B Data Provider?

The Lead Generation Company has spent over a decade perfecting the art of bespoke B2B data creation and integrated lead generation. Our 98% accuracy guarantee and 80% lead-to-customer conversion rates speak for themselves.

Get in touch for an honest conversation about your data needs and how bespoke, verified data can transform your lead generation results.

Frequently Asked Questions

What’s the difference between a data provider and a lead generation agency?

Data providers sell you contact information and business intelligence – essentially lists of companies and decision-makers. Lead generation agencies (like us!) go further by not only providing bespoke data but actively using it to generate qualified opportunities through multi-channel outreach. Think of data providers as giving you ingredients, whilst lead generation agencies cook the meal and serve it ready to eat.

How often should B2B data be updated?

B2B data decays at approximately 30% annually due to job changes, company relocations, and business closures. Premium providers update their databases quarterly or monthly, whilst the best bespoke providers verify data immediately before use. If your data hasn’t been refreshed in 12 months, expect at least one-third of it to be inaccurate.

What’s the difference between firmographic and contact data?

Firmographic data describes the company itself – industry, size, revenue, location, and technologies used. Contact data provides individual decision-maker details – names, job titles, email addresses, phone numbers. You need both for effective B2B marketing: firmographics help you identify which companies to target, whilst contact data lets you actually reach decision-makers within those companies.

What’s a reasonable data accuracy rate to expect?

Industry average accuracy rates typically range from 70-85%. Premium providers offering telephone verification usually achieve 90-98% accuracy.