The register
The register lists Sumdog Ltd in Edinburgh as a licensed sponsor on Skilled Worker, an entry that goes back to at least 2026. Its rating on the register is Worker (A rating).
Sumdog Ltd is the registered name (Companies House number SC167331), a private limited company on the register since 1996. Registered office: Codebase Argyle House, 3 Lady Lawson Street, Edinburgh, EH3 9DR, EH3 9DR. Its filed activity puts it in it, software and media. It has traded under other names before, including Crocodile Clips Limited.
For a candidate this means one less obstacle: Sumdog Ltd already has the licence most employers would have to apply for. The rest is the ordinary job of getting the interview.