The register
The register lists Saboteur 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 Saboteur Limited (company number 11968595), a private limited company incorporated in 2019, 7 years ago. Registered office: Bloomsbury House, 29b Montague Street, London, WC1B 5BW, WC1B 5BW. Its filed activity puts it in professional and technical services. It has traded under other names before, including The Saboteurs Limited.
What the licence tells a candidate is that the door is not locked. Whether it is open this month is a question for Saboteur Ltd's own careers page and the job boards, and the answer changes with the season and the order book.