The register
The register lists Gymnasium in London, Clapham as a licensed sponsor on Skilled Worker, an entry that goes back to at least 2026. Rating on the current register: Worker (A rating).
Gymnasium Group Limited is the registered name (Companies House number 10755190), a private limited company on the register since 2017. The registered office is at 66 Paul Street, London, EC2A 4NA, EC2A 4NA. By its SIC codes the business is in arts, sport and leisure. It has traded under other names before, including In2life Limited.
What the licence tells a candidate is that the door is not locked. Whether it is open this month is a question for Gymnasium's own careers page and the job boards, and the answer changes with the season and the order book.