The register
The register lists Oxalis Games 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).
At Companies House the business is Oxalis Games Ltd (company number 12763199), a private limited company incorporated in 2020, 6 years ago. The registered office is at Flat 202a 100a George Street, Croydon, CR0 1GP, CR0 1GP. 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.