The register
The register lists Realisable Software Ltd in London as a licensed sponsor on Skilled Worker, an entry that goes back to at least 2026. The register records its rating as Worker (A rating).
Realisable Software Limited is the registered name (Companies House number 06774380), a private limited company on the register since 2008. The registered office is at Office C 616-618 Chigwell Road, Woodford Green, IG8 8AA, IG8 8AA. Its filed activity puts it 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.