The register
The register lists Fulhouse 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).
At Companies House the business is Fulhouse Limited (company number 11863156), a private limited company incorporated in 2019, 7 years ago. The registered office is at 167-169 Great Portland Street 167-169 Great Portland Street 5th Floor London, 5th Floor, London, W1W 5PF, W1W 5PF. Its filed activity puts it in property. It has traded under other names before, including Landmark Investment and Consulting Ltd.
Holding a licence is the expensive, slow part done. For Fulhouse limited the question each time is only whether the role and the pay fit the current rules, and that is checked per vacancy.