The register
HM Treasury is licensed to sponsor on Skilled Worker and Government Authorised Exchange. Its entry on the register dates back to at least 2026, and the organisation is based in London. Its rating on the register is Worker (A rating), Temporary Worker (A rating).
HM Treasury UK Sovereign Sukuk PLC is the registered name (Companies House number 09051219), a public limited company on the register since 2014. Registered office: 27 Old Gloucester Street, London, WC1N 3AX, WC1N 3AX. By its SIC codes the business is in finance and insurance.
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.