The register
The register lists London gas services 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).
London Gas Services Ltd is the registered name (Companies House number 15880660), a private limited company on the register since 2024. The registered office is at 11 Wilton Place, London, E4 9GG, E4 9GG. Its filed activity puts it in construction.
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.