List building agencies in the UK
5 agencies in the index offer list building and serve buyers in the UK. Ranked by the evidence on record, the first three are SalesAR (UK), Spring Drive (London, UK) and Sopro (Brighton, UK). Contact data decays every month, so ask how emails and phone numbers are verified and how often the list is refreshed. UK buyers expect short, plain emails, British spelling and an easy way to say no. Most tech and financial services buyers sit in London, while manufacturing buyers sit in the Midlands and the North. None of the 5 publish a monthly minimum, so expect to ask each one for a quote. None of them advertise pay-per-meeting or pay-per-lead pricing. Besides list building, the services most often offered here are appointment setting, cold email and cold calling. 1 builds on Clay, 0 work inside HubSpot and 4 use their own or undisclosed tools. 3 have a Clutch or G2 rating on file with the date it was read. Before signing, ask for a sample sequence, the definition of a qualified meeting and who owns the domains and data afterward.
| # | Agency | HQ | Stack | From (monthly) | Model | Proof | Badges |
|---|---|---|---|---|---|---|---|
| 1 | SalesAR↗ | UK | Custom | Ask | Not published | Clutch4.8 (136) | Top Outbound Agency UK 2026 |
| 2 | Spring Drive↗ London + New York | London, UK | Clay | Ask | Not published | Clutch4.9 (12) | Clay Native |
| 3 | Sopro↗ Also runs a Miami entity | Brighton, UK | Custom | Ask | Not published | G24.9 (17) | Top Outbound Agency UK 2026 |
| 4 | Focus One↗ | IE | Custom | Ask | Not published | n/a | none |
| 5 | Pearl Lemon Leads↗ US arm at pearllemonleadsusa.com | London, UK | Custom | Ask | Not published | n/a | SDR Pod |
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What differs in the UK
- Compliance:PECR lets you email corporate subscribers without consent if you identify yourself and offer an opt-out; sole traders and partnerships need consent, and UK GDPR governs the data.
- Budget:None of the 5 publish a monthly minimum, so expect to ask each one for a quote.
Related pages
Questions
- How much does a list building agency cost?
- None of the 5 publish a monthly minimum, so expect to ask each one for a quote. Setup fees and minimum terms vary, so ask for both before comparing monthly prices.
- Retainer or pay-per-meeting?
- A retainer buys an agreed scope each month and suits a defined ICP with at least three months of runway. Pay-per-meeting moves the risk to the agency and suits offers with a short sales cycle. On this page, 0 agencies offer pay-per-meeting pricing and 0 pay-per-lead.
- How long until results?
- New sending domains need two to three weeks of warm-up before volume goes out, and list building runs alongside it. Most agencies quote first meetings in weeks four to eight.
- Does the stack matter?
- 1 of the 5 build on Clay and 0 work inside HubSpot. Ask who owns the sending domains, the data and the workflows when the engagement ends; some agencies hand them over and some keep them.