The register
The register lists Long Harbour Ltd in London as a licensed sponsor on Skilled Worker, an entry that goes back to at least 2026. Its rating on the register is Worker (A rating).
Long Harbour Ltd is the registered name (Companies House number 06905581), a private limited company on the register since 2009. The registered office is at One, New Change, London, EC4M 9AF, EC4M 9AF. Its filed activity puts it in property. It has traded under other names before, including Attila Asset Management Ltd., Cadstone Asset Managment Limited.
For a candidate this means one less obstacle: Long Harbour Ltd already has the licence most employers would have to apply for. The rest is the ordinary job of getting the interview.