Refolk
Sign in

Top Series A companies in the United Kingdom

Companies that have closed a Series A - product-market fit confirmed and scaling. Filtered to companies headquartered in the United Kingdom.

Edit the query above, or pick a refinement. 100 free credits on sign-up, no card needed.

Built from a search like: “Top Series A companies in the United Kingdom”

Ranked by current headcount across Series A companies headquartered in the United Kingdom. Refreshed daily.

  1. 1
    Asda· Leeds, England, United Kingdom
    • Series A
    • 52.1k employees
    • Founded 2024
  2. 2
    Sky· Isleworth, England, United Kingdom
    • Series A
    • 35.3k employees
    • Founded 1989
  3. 3
    Google DeepMind· London, England, United Kingdom
    • Series A
    • 9.5k employees
    • Founded 2010
  4. 4
    Zenith· London, England, United Kingdom
    • Series A
    • 5.3k employees
    • Founded 1988
  5. 5
    Fitch Group, Inc.· London, England, United Kingdom
    • Series A
    • 4.2k employees
    • Founded 2016
Reveal 1,059 more·100 free credits, no card

Find engineers at Series A companies in the United Kingdom

Series A companies in the United Kingdom are some of the fastest-moving employers in the market. The list above ranks the largest Series A-stage companies headquartered in the United Kingdom by current headcount, drawn from public LinkedIn and Crunchbase records. With 1,064 matching companies in our index, the density of senior engineers, designers, and founders is unusually high.

At Series A, teams tend to be small, ambitious, and on the hunt for senior talent. The companies on this list are good signals for where the the United Kingdomtalent market is heating up - and for which engineers and founders are about to become tomorrow’s operators.

Refolk converts this list into a live search. Ask for “founders of Series A companies in the United Kingdom” or “senior engineers at Series A companies in the United Kingdom hiring” and Refolk returns a ranked shortlist with evidence behind each match.

How this list is built

Refolk pulled Series A companies headquartered in the United Kingdom from public LinkedIn and Crunchbase records, ranked them by current employee count, and kept those with at least 5 employees. The list refreshes once a day.

Last refreshed: Sun, 21 Jun 2026 11:25:21 GMT

Need an even more specific search?

Refolk runs natural-language searches across LinkedIn, GitHub, and the open web. Try one of these:

Related lists

See all company lists.

Or zoom out