The register
The register lists Thermly Limited in Doncaster 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 Thermly Limited, number 14706968, incorporated 2023: 3 years of filings behind the name. The registered office is at Sidings House Sidings Court, Lakeside, Doncaster, South Yorkshire, DN4 5NU, DN4 5NU. Its filed activity puts it in it, software and media.
A licence says an organisation may sponsor; it does not say it is hiring today. The way to find out is the same as for any employer: the careers page, the job boards, and a direct approach with a UK-style CV that says early that sponsorship would be needed.