The register
The register lists Custom Security Solutions Limited 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 Custom Security Solutions Limited (company number 04013996), a private limited company incorporated in 2000, 26 years ago. The registered office is at Unit 8 Harforde Court, John Tate Road, Hertford, SG13 7NW, SG13 7NW. By its SIC codes the business is in security, cleaning and facilities. It has traded under other names before, including Custom Security Systems Limited.
Holding a licence is the expensive, slow part done. For Custom Security Solutions Limited the question each time is only whether the role and the pay fit the current rules, and that is checked per vacancy.