The register
The register lists BookTrust in Leeds as a licensed sponsor on Skilled Worker, an entry that goes back to at least 2026. Rating on the current register: Worker (A rating).
Booktrust is the registered name (Companies House number 00210012), a company limited by guarantee on the register since 1925. Registered office: 1 Aire Street, Leeds, LS1 4PR, LS1 4PR. Its filed activity puts it in education. It has traded under other names before, including Book Trust, National Book League.
For a candidate this means one less obstacle: BookTrust already has the licence most employers would have to apply for. The rest is the ordinary job of getting the interview.