The register
The register lists FieldworkHub Ltd 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 Fieldworkhub Ltd (company number 11280297), a private limited company incorporated in 2018, 8 years ago. The registered office is at C/O Hillier Hopkins Llp First Floor, Radius House, 51 Clarendon Road, Watford, Hertfordshire, WD17 1HP, WD17 1HP. Its filed activity puts it in professional and technical services.
A licence says an organisation may sponsor; it does not say it is hiring today. The way to find out is the same as for any employer: the careers page, the job boards, and a direct approach with a UK-style CV that says early that sponsorship would be needed.