Best Practice | Marketing

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12/09/2025

10 Top B2B Data Providers in The UK [Compared]

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One accurate contact can unlock your next big deal, while bad data can cost you thousands. Top sales, marketing, and hiring teams in the UK depend on precise B2B data that complies with GDPR to be able to do lead generation, run outbound campaigns that are scalable, and give personalized outreach.

With compliance standards getting stricter, data losing its value faster, and AI enrichment becoming a must, the choice of the right B2B data supplier in the UK has a direct impact on the areas of deliverability, conversions, and ROI.

This detailed comparison gives an overview of the best UK B2B data providers by examining such aspects as quality of validated emails, pricing transparency, accuracy of databases, compliance standards, and integrations. If you need UK business contacts, phone-validated leads, or targeting by industry, then this guide will help you to choose confidently—and to move faster from data to deals.

What is a B2B Data Provider?

A B2B data provider supplies companies with verified B2B contact data, firmographic insights, and technographic details that support targeted outreach. Leading B2B data providers in the UK offer GDPR-compliant, accurate, and regularly updated information so sales and marketing teams can identify the right decision-makers faster.

These providers deliver structured data, such as job titles, company size, industry, and contact information- helping businesses build reliable UK business contact databases for campaigns and CRM enrichment.

Why Businesses Use B2B Data Providers?

Companies leverage B2B data providers from the UK to speed up lead generation, increase the precision of targeting, and keep a clean CRM. These systems provide teams with compliant B2B data at their fingertips so they can reach their best targets without the grunt work of going to the research.

Marketing and sales reps use this data to personalize communication, lower bounce rates, and shorten the time needed to close deals. Businesses also turn to these vendors as they try to target new customers, validate contact details lists, and enrich ABM and job recruitment outreach with sales and marketing data.

Important Characteristics of a UK B2B Data Provider

Selecting the right B2B data provider is essential for ensuring accuracy, compliance, and reliable outreach performance. A strong platform should empower your sales and marketing teams with high-quality data, seamless integrations, and scalable tools.

To guarantee completely compliant B2B data, give GDPR compliance and transparent data sourcing top priority.
Select suppliers who uphold regular refresh cycles and high data accuracy.
Ensure access to verified B2B email lists and detailed firmographic and technographic insights.
To focus on prospects based on job title, industry, location, revenue, or technology stack, use platforms with sophisticated search filters.
Seek smooth CRM integrations with programs such as HubSpot, Zoho, and Salesforce.
Take into account suppliers who provide API access for workflow customization and automated enrichment.
To find in-market buyers, assess the availability of intent data.

How can we compare Providers?

Before evaluating each platform, we established core criteria that define a reliable B2B data provider. These included:

UK and EU database depth
Accuracy and verification methods
Up-to-date phone numbers and email deliverability
GDPR-compliant sourcing
Integration support (CRMs, sales engagement, email platforms)
Pricing transparency and contract flexibility
Customer support and onboarding

These factors helped determine which provider fits which type of business—from SMBs to mid-market and enterprise.

Comparison Criteria and Evaluation Method

Category	Weight
GDPR compliance & opt-in sourcing	25%
Data accuracy & verification	25%
Pricing flexibility & transparency	15%
UK dataset coverage	15%
Integrations & usability	10%
Support & onboarding	10%

Each data provider was assessed using public documentation, feature breakdowns, customer reviews, and industry benchmarks.

Top 10 B2B Data Providers in the UK

Selecting the right B2B data provider in the UK can greatly enhance outreach, improve sales intelligence, and support compliant prospecting campaigns. Below is a comparison of the leading B2B data platforms in the UK market, based on verified data access, business intelligence capabilities, CRM integrations, and pricing suitability.

ReachStream

Recognized as one of the most cost-effective UK B2B data platforms, it delivers verified B2B email lists, direct phone numbers, and industry-filtered company datasets built to support high-performing outreach. The platform empowers teams that need accurate, compliant data—without the cost or complexity of enterprise solutions.

It goes beyond basic data access by offering a built-in email verifier, advanced data enrichment, ReachAPI for seamless CRM integration, following with Salesforce, Hubspot, and a Chrome extension that enables users to capture and verify leads directly from professional networks and business websites.

The platform adheres to strict global compliance standards, including ISO 27001, SOC 2 Type II, GDPR, CCPA, CAN-SPAM, PIPEDA, ACMA, EDPS, and DPDPA, allowing businesses to run outreach campaigns with confidence and regulatory assurance.

With flexible pricing, a free trial, and continuously updated UK business contacts, it remains a trusted choice for startups, agencies, and SMBs seeking to scale sales and marketing efforts using reliable, compliant, and actionable data—without long-term contracts or enterprise-level costs.

Cognism

Cognism continues to lead the UK market as the most trusted choice for regulated industries that need high-precision contact insights and GDPR-compliant B2B data. Known for its UK-first dataset, advanced filtering, mobile accuracy, and AI-powered verification, Cognism helps large sales teams conduct compliant outreach more efficiently.

The addition of intent signals, compliance-verified direct dial numbers, and CRM integrations makes it a strong solution for enterprise-level sales intelligence platforms.

ZoomInfo

ZoomInfo is a leading global platform serving organizations that focus on large-scale data collection, analytics, and automated go-to-market processes. Its expansive dataset—including emails, verified contacts, company firmographics, and technographics—supports sales and marketing automation across various regions.

While it provides advanced enrichment and revenue intelligence features, its lengthy contracts and tiered pricing are mainly designed for large enterprise teams with high-volume outbound needs.

Apollo.io

Apollo.io combines data sourcing with outreach automation, making it a popular choice for fast-growing teams to develop outbound sales workflows. The platform offers features such as email sequencing, CRM synchronization, AI-powered prospecting support, and scalable data access tailored for revenue teams at various growth stages.

Its flexible pricing model, including a generous free plan, helps users test targeting strategies while leveraging verified emails and phone-verified contacts. Apollo.io is especially useful for teams looking to combine prospecting with automated outbound execution on one platform.

Lusha

Lusha is popular for quick and easy contact lookup, especially through its Chrome extension. Users can instantly access verified emails and phone numbers, making it especially useful for SDRs, HR teams, and freelance recruiters who need accurate business contacts fast.

Although the bulk export limits may not work well for larger sales teams, the convenience of real-time lookups boosts their popularity among individual users and smaller businesses.

Clearbit

Clearbit specializes in real-time data enrichment and validation, focusing primarily on increasing inbound conversions rather than exporting outbound lists. Marketing and RevOps teams use Clearbit to enhance CRM data, identify high-value prospects, and personalize buyer journeys.

The platform integrates smoothly with SaaS ecosystems and supports lead scoring, form shortening, and segmentation, making it a valuable tool for B2B lead generation and optimization.

LeadIQ

LeadIQ is built to enhance prospecting efficiency, not to function as a bulk data source. Users can gather verified business contact details and sync them directly with CRM platforms like HubSpot and Salesforce, minimizing manual data entry.

Ideal for hybrid SDR workflows, LeadIQ excels in outreach automation and workflow alignment but provides a smaller dataset than high-volume providers.

RocketReach

RocketReach is recognized for its broad access to global business email addresses and affordability. Although verification levels differ, the platform remains a popular option for smaller teams, freelancers, and occasional users seeking cost-effective email outreach.

Its simple interface and extensive database make it useful for supplementing other data sources.

SignalHire

Designed mainly for recruitment teams, it focuses on delivering verified candidate emails and mobile numbers that streamline talent acquisition efforts. The browser extension simplifies contact extraction across professional platforms, making it especially useful for HR and staffing workflows.

While SignalHire lacks advanced sales automation features, its affordability and reliable phone/email verification make it a strong fit for companies prioritizing hiring and candidate outreach.

Adapt.io

It provides a simple, low-cost way to source bulk companies and contact data in the UK, making it a strong entry point for teams creating their first outbound datasets. Although data accuracy can vary, the option to export verified contacts and integrate them with CRM platforms adds meaningful value.

Its affordability and ease of use make it especially suitable for early-stage demand-generation teams that need to scale outreach quickly without heavy investment.

UK B2B Data Showdown: Pricing, Features, Results

Provider	Best For	Compliance and Regulations	Data Accuracy	Pricing Type	Free Trial
ReachStream	Sales, marketing, recruiting, and ABM teams (from solopreneurs to enterprises) need targeted B2B leads.	ISO 27001, SOC 2 Type 2, GDPR, CCPA, CAN-SPAM, PIPEDA, ACMA, EDPS, and DPDPA compliance	AI-verified data with 90% email deliverability and 95% accuracy.	Tiered subscription with credit-based exports (free and paid plans).	Yes. Free Icebreaker plan provides 200 email views and 100 export credits/month (lifetime).
Lusha	GTM teams (sales, RevOps, marketing, recruiting) at SMBs to enterprises needing compliant, integrated contact data.	Yes. Fully GDPR/CCPA compliant (ePrivacy certified).	98% email deliverability and 85% phone accuracy (user reports 95% deliverability).	Credit-based subscription (free + paid plans with credits).	Free plan: 70 credits/month (plus browser extension with limited reveals).
Cognism	B2B sales/marketing teams targeting UK/EMEA markets, requiring compliant mobile contacts and global data.	Fully GDPR & CCPA compliant (ISO27001/SOC2); scrubs against DNC lists.	Uses phone-verified “Diamond Data” that claims 98% connect rates (3× more connects).	Enterprise tiered plans (Grow/Elevate), custom quote, no free plan.	Pricing is not publicly disclosed and varies by usage and team size, with most organizations spending between $15,000 and $100,000+ annually.
ZoomInfo	Large enterprises’ sales/marketing teams need the most extensive contact & account database.	GDPR/CCPA compliant (rigorous data governance for international markets).	Industry-average accuracy (~75–85% for emails) (extensive mobile coverage).	Multi-tier annual subscription (seats + credits, e.g. Professional $15k/yr per seat).	Free trial/demo available; also, a limited “Lite” edition (request access).
Apollo.io	Sales/marketing teams (SMBs to large) seeking an all-in-one prospecting & engagement platform.	GDPR Compliant (explicitly noted on site).	Users report Apollo data is “generally good” (some gaps); no explicit accuracy claim.	Tiered plans: Free (“Starter”), Basic $49/user/mo, Pro $79, Org $119 (all with monthly credits).	Yes
Clearbit	Marketing and sales teams need company/contact enrichment and website visitor insights.	Privacy-focused (B2B data, not only consumer); strong security/privacy practices.	Users praise 90-92% data accuracy; continually improving with AI (new attributes).	Credit-based (via HubSpot’s Breeze Intelligence) starts $45/month for 100 credits.	Free account available (credit-limited “Starter”); demos for paid tiers.
SignalHire	Recruiters and sales/marketing teams are extracting emails/phones from social profiles and the web in real-time.	GDPR/CCPA compliant (verifies only public domain data).	Claims very high accuracy: 95–96% email accuracy and 3–5% bounce rate.	Credit-based (e.g. $49 for 350 credits to reveal contacts).	Free plan/trial: 5 credits/month (always free).
RocketReach	Individual freelancers to enterprise teams needing broad email & phone prospecting (global coverage).	CCPA compliant; GDPR not explicitly confirmed (provides EU-data opt-out).	Boasts 80-85% accuracy across contacts.	Tiered (Free, Essentials, Pro, Ultimate); e.g. $69, $119, $209 per month.	Free plan with 5 lookups; no other trial (upgrade anytime).
Adapt.io	Sales/marketing teams need a large, detailed B2B contact database (250M+ records) for prospecting.	GDPR compliant (SOC2, HIPAA, FedRAMP, etc., per security profiles).	Markets “verified, 80–85% accurate” data with real-time verification and data freshness.	Tiered (Starter $99/user/mo, Pro $299 for 5 users, Enterprise $499 for 10; credit-based).	7-day free trial (up to 50 contacts).
LeadIQ	Sales/SDR teams focused on prospecting efficiency (lead capture, enrichment, champion tracking).	GDPR compliant and SOC 2 Type II certified.	Emphasizes high data quality (case studies report improved accuracy).	Freemium + paid. Free ($0, 1 user/50 credits), Pro $200/user/mo (50 credits), Enterprise (custom).	30-day free trial on any plan.

Benefits and Drawbacks of Using B2B Data Providers

Using B2B data providers accelerates prospecting and sharpens targeting, but success starts with selecting a reliable, compliant vendor. While high-quality data powers faster outreach, strong execution and a clear strategy ultimately turn insights into conversions.

Let's talk about the good stuff, where:

You get instant access to large contact databases that comply with GDPR.
You speed up lead generation and cut down on the amount of time spent on manual research.
Verified B2B email lists and enriched data fields increase the accuracy of your targeting.
With precise, up-to-date sales and marketing data, you support scalable sales, marketing, and recruitment operations.

What are the not-so-good ones:

Careful vendor comparison is necessary because data accuracy varies among B2B data providers in the UK.
For small teams, subscription plans can be expensive.
Deliverability may be impacted by the fact that some providers do not provide regular updates or transparent sourcing.
Effective outreach tactics are still necessary for teams; data by itself cannot ensure conversions.

Why ReachStream is the Best B2B Data Alternative

Choosing the right B2B data platform depends on a company’s size, outreach goals, and budget, and that’s where ReachStream stands out as a practical and high-value choice, especially for UK-focused teams.

Unlike platforms that require long-term contracts or enterprise-level investments, ReachStream offers flexible pricing and pay-as-you-go options, making it accessible to startups, SMBs, and growing sales teams testing or scaling outbound strategies.

Our verified UK business database, along with ISO 27001, SOC 2 Type 2, GDPR, CCPA, CAN-SPAM, PIPEDA, ACMA, EDPS, and DPDPA compliance, and industry-specific segmentation, ensures that users access not just large data volumes but also relevant, deliverable, and compliant contacts.

ReachStream’s strength also lies in its ease of use and workflow support. The platform integrates smoothly with commonly used CRM integration using ReachAPI, helping streamline prospecting and minimizing manual data entry.

For companies that prioritize affordability without sacrificing 95% data accuracy and 90% email deliverability, ReachStream offers a reliable balance. This positions it as a strong contender among the top B2B data providers in the UK, not only for immediate lead generation but also as a scalable long-term partner as outreach maturity and data complexity increase.

Final Recommendation

Finding the best B2B data provider in the UK depends on accuracy, compliance, pricing flexibility, and how well the platform supports your sales and marketing workflows. Each provider in this comparison brings strengths suited to different use cases—from bulk exports and enrichment tools to advanced analytics and workflow automation.

The right choice ultimately depends on your outreach maturity, industry focus, and scalability needs. Among the evaluated platforms, ReachStream stands out as a strong, balanced option, especially for teams seeking verified UK contacts without high enterprise costs or long-term commitments.

FAQs

1. What should I check when choosing a UK B2B provider?

Think about pricing, industry coverage, CRM integrations, verified contact accuracy, and GDPR compliance. Finding the platform that best suits your outreach strategy can be accomplished by comparing them based on these criteria.

2. Which provider offers the best GDPR-compliant data?

While a number of platforms guarantee compliance, ReachStream and Cognism are well known for their rigorous GDPR compliance and verified UK business contacts.

3. Do they provide verified UK B2B email lists?

Yes, most listed platforms supply verified email addresses. Providers like ReachStream, LeadIQ, ZoomInfo, and Apollo.io offer verification checks to reduce bounce rates.

4. Can I get phone-verified leads from B2B data providers?

Yes, some platforms provide direct dial numbers. Providers such as ReachStream, Cognism, and Apollo.io include phone-verified contacts for UK decision-makers.

5. Which B2B data providers offer free trials or credits?

Some providers offer free trials or credits. ReachStream, Apollo.io, and RocketReach are known for letting new users test data quality before buying.

6. Can I filter UK contacts from ReachStream?

Yes, the ReachStream platform provides advanced filtering options that help businesses target key decision-makers based on company size, industry vertical, job function, or location.

7. Which B2B data provider is best for small or growing teams?

For scalability and affordability, ReachStream and Apollo.io are solid options, providing flexible pricing and pay-as-you-go plans.

8. How accurate is B2B data from these platforms?

Accuracy depends on verification methods and refresh frequency. Providers like ReachStream regularly update their records to keep email addresses valid and company data current.

9. Can the data sync with CRMs like HubSpot or Salesforce?

Yes. Most providers support CRM integrations. LeadIQ, Apollo.io, ZoomInfo, and ReachStream make syncing easier for sales and marketing teams.

10. How often do providers refresh their databases?

Refresh rates differ, but top platforms update records weekly or monthly. ReachStream focuses on data freshness to provide accurate company and contact information for UK outreach.

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Mohammed Younus is the Senior Manager of Business Operations with a keen insight into the B2B landscape. Through his contributions to this blog, he aims to share cutting-edge tactics and insights that empower sales and marketing professionals to achieve unparalleled success.