The register
The register lists Greenbrook Communications Limited 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 Greenbrook Communications Limited (company number 07602754), a private limited company incorporated in 2011, 15 years ago. The registered office is at 2nd Floor 1 Vere Street, London, W1G 0DF, W1G 0DF. Its filed activity puts it in business services.
For a candidate this means one less obstacle: Greenbrook Communications Limited already has the licence most employers would have to apply for. The rest is the ordinary job of getting the interview.