The register
The register lists The Main Thing Ltd in Bleasby, Nottingshire as a licensed sponsor on Creative Worker, an entry that goes back to at least 2026. The register records its rating as Temporary Worker (A rating).
The Main Thing Ltd is the registered name (Companies House number 10596469), a private limited company on the register since 2017. Registered office: 62 Stakes Road Purbrook, Waterlooville, Hampshire, PO7 5NT, PO7 5NT. By its SIC codes the business is in professional and technical services. It has traded under other names before, including Inside Track Music Ltd.
Holding a licence is the expensive, slow part done. For The Main Thing Ltd the question each time is only whether the role and the pay fit the current rules, and that is checked per vacancy.