The register
The register lists Posada & Co. 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).
Companies House lists it as Posada & Co Solicitors Limited, number 09472160, incorporated 2015: 11 years of filings behind the name. The registered office is at 3 Griffin Gate, 135 Lower Richmond Road, London, SW15 1EZ, SW15 1EZ. Its filed activity puts it in professional and technical services. It has traded under other names before, including DP Law (london) Consultancy Limited.
For a candidate this means one less obstacle: Posada & Co. already has the licence most employers would have to apply for. The rest is the ordinary job of getting the interview.