The register
The register lists Puzzel in London as a licensed sponsor on Skilled Worker, an entry that goes back to at least 2026. The register records its rating as Worker (A rating).
Companies House lists it as Puzzel Ltd, number 04124967, incorporated 2000: 25 years of filings behind the name. The registered office is at 58 Herschel House, 58 Herschel Street, Slough, Berkshire, SL1 1PG, SL1 1PG. By its SIC codes the business is in it, software and media. It has traded under other names before, including Intelecom UK Limited, Consorte UK Limited.
For a candidate this means one less obstacle: Puzzel already has the licence most employers would have to apply for. The rest is the ordinary job of getting the interview.