The register
The register lists Mass (UK) Ltd in Harrow as a licensed sponsor on Skilled Worker, an entry that goes back to at least 2026. Rating on the current register: Worker (A rating).
Mass (UK) Ltd is the registered name (Companies House number 04601500), a private limited company on the register since 2002. The registered office is at 58 The Arches, Harrow, Middlesex, HA2 8AA, HA2 8AA. Its filed activity puts it in motor trade and vehicle repair. It has traded under other names before, including Phoenix Venture (UK) Ltd, Phoenix Venture Clothing (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.