The register
The register lists First-String Homes Limited 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).
First-string Homes Limited is the registered name (Companies House number 09912688), a private limited company on the register since 2015. The registered office is at 85-87 Bayham Street, London, NW1 0AG, NW1 0AG. Its filed activity puts it in property. It has traded under other names before, including First-string Property Limited.
Holding a licence is the expensive, slow part done. For First-String Homes Limited the question each time is only whether the role and the pay fit the current rules, and that is checked per vacancy.