The register
The register lists Amborella Group 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).
Amborella Group Limited is the registered name (Companies House number 11219840), a private limited company on the register since 2018. Registered office: 4th Floor 95 Gresham Street, London, EC2V 7AB, EC2V 7AB. Its filed activity puts it in professional and technical services. It has traded under other names before, including Subrosmart (UK) Limited.
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.