The register
The register lists AMOSCA Ltd in London as a licensed sponsor on Skilled Worker, an entry that goes back to at least 2026. Rating on the current register: Worker (A rating).
Companies House lists it as Amosca Limited, number 06243654, incorporated 2007: 19 years of filings behind the name. The registered office is at 10 Arthur Street, London, EC4R 9AY, EC4R 9AY. Its filed activity puts it in it, software and media. It has traded under other names before, including Amosca Enterprise Limited.
For a candidate this means one less obstacle: AMOSCA Ltd already has the licence most employers would have to apply for. The rest is the ordinary job of getting the interview.