The register
Rnr Maintenance UK Limited, London, holds a Home Office sponsor licence on the Skilled Worker route, and has been on the register since at least 2026. Rating on the current register: Worker (A rating).
Companies House lists it as Rnr Maintenance UK Limited, number 11901509, incorporated 2019: 7 years of filings behind the name. The registered office is at Unit Gm1, The Whitechapel Centre, 85 Myrdle Street, London, E1 1HL, E1 1HL. Its filed activity puts it in construction.
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.