Clay agencies in the UK
4 agencies in the index build on Clay and serve buyers in the UK. Ranked by the evidence on record, the first three are mgsh (London, UK, from $10,000 a month), Spring Drive (London, UK) and Vanderbuild (Warsaw, PL). Clay agencies build signal-based lists and workflows the client can keep, and Clay runs a partner program that lists certified agencies by tier. 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. One of the 4 publishes a monthly minimum: mgsh at $10,000. 0 offer pay-per-meeting pricing and 1 offers pay-per-lead; the rest work on a retainer or do not say. The services most often offered here are cold email, GTM engineering and intent data. 1 has a Clutch or G2 rating on file with the date it was read. Ask whether the workspace and its data stay with you when the engagement ends.
| # | Agency | HQ | Stack | From (monthly) | Model | Proof | Badges |
|---|---|---|---|---|---|---|---|
| 1 | mgsh↗ Two-person founder-led Clay boutique | London, UK | Clay | $10,000 | Retainer | n/a | Clay NativeTop Outbound Agency UK 2026 |
| 2 | Spring Drive↗ London + New York | London, UK | Clay | Ask | Not published | Clutch4.9 (12) | Clay Native |
| 3 | Vanderbuild↗ Retainer, project or pay-per-warm-lead | Warsaw, PL | Clay | Ask | Hybrid | n/a | Clay Native |
| 4 | StackOptimise↗ Free trial contacting 6,000 ICP leads | London, UK | Clay, Smartlead | Ask | Not published | n/a | Clay Native |
Want two or three picks for your budget? Find your agency. A person replies within 24 hours.
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:One of the 4 publishes a monthly minimum: mgsh at $10,000.
Related pages
Questions
- How much does a Clay agency cost?
- One of the 4 publishes a monthly minimum: mgsh at $10,000. 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 1 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?
- 4 of the 4 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.