The register
The register lists Infinity Fire And Security Ltd in London as a licensed sponsor on Skilled Worker, an entry that goes back to at least 2026. Its rating on the register is Worker (A rating).
Companies House lists the business as Infinity Fire and Security Ltd, company number 16164307, a private limited company. Registered office: 20 Wenlock Road, London, N1 7GU, N1 7GU. By its SIC codes the business is in it, software and media.
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.