The register
The register lists Attend in London as a licensed sponsor on Skilled Worker, an entry that goes back to at least 2026. The register records its rating as Worker (A rating).
At Companies House the business is Attend (company number 05713403), a company limited by guarantee incorporated in 2006, 20 years ago. Registered office: 11-13 Cavendish Square, London, W1G 0AN, W1G 0AN. By its SIC codes the business is in other services.
For a candidate this means one less obstacle: Attend already has the licence most employers would have to apply for. The rest is the ordinary job of getting the interview.