The register
The register lists Ethos Jiujitsu Barnet Ltd in London as a licensed sponsor on Skilled Worker, an entry that goes back to at least 2026. Rating on the current register: Worker (A rating).
Companies House lists the business as Ethos Jiujitsu Barnet Ltd, company number 16503757, a private limited company. Registered office: Belfry House, Bell Lane, Hertford, Hertfordshire, SG14 1BP, SG14 1BP. By its SIC codes the business is in arts, sport and leisure.
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.