The register
The register lists Mount Anvil 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).
At Companies House the business is Mount Anvil Limited (company number 02706348), a private limited company incorporated in 1992, 34 years ago. The registered office is at 140 Aldersgate Street, London, EC1A 4HY, EC1A 4HY. Its filed activity puts it in construction. It has traded under other names before, including Mount Anvil PLC, Mount Anvil Construction Limited.
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.