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Top SaaS companies in London

Software-as-a-service vendors selling subscription cloud software to other businesses. Filtered to companies headquartered in London.

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Built from a search like: “Top SaaS companies in London”

Ranked by current headcount across SaaS companies headquartered in London. Refreshed daily.

  1. 1
    Nothing· London, England, United Kingdom
    • undisclosed
    • 29.8k employees
    • Founded 2020
  2. 2
    Edutech· Greater London, England, United Kingdom
    • 25k employees
  3. 3
    Company· London, England, United Kingdom
    • 23.5k employees
  4. 4
    Pharma Solutions Hub· London, England, United Kingdom
    • 15.1k employees
  5. 5
    local· Greater London, England, United Kingdom
    • 14k employees
    • Founded 2017
Reveal 5,109 more·100 free credits, no card

Find engineers at SaaS companies in London

London has long been a hub for SaaS, and the list above ranks the largest SaaS companies headquartered there by current headcount, drawn from public LinkedIn and Crunchbase records. With 5,114 matching companies in our index, this is a good map of where the SaaS talent in Londonlives - useful whether you’re recruiting, partnering, or sizing a market.

The biggest SaaS companies in London tend to be the gravitational centres for specialised talent - senior engineers, ML researchers, applied scientists, designers - while the smaller ones compete on speed, equity, and proximity to founders.

Refolk converts this list into a live search. Ask for “SaaS engineers in Londonhiring senior staff” or “founders of SaaS companies in Londonwho left in the last 12 months” and Refolk returns a ranked shortlist with the evidence that earned each person a spot.

How this list is built

Refolk pulled SaaS companies headquartered in London from public LinkedIn and Crunchbase records, ranked them by current employee count, and kept those with at least 10 employees. The list refreshes once a day.

Last refreshed: Sun, 21 Jun 2026 09:24:44 GMT

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