The register
The register lists Tavistock Communications Limited in London as a licensed sponsor on Skilled Worker, an entry that goes back to at least 2026. Rating on the current register: Worker (A rating).
Companies House lists it as Tavistock Communications Limited, number 02623799, incorporated 1991: 35 years of filings behind the name. Registered office: Cannongate House, 62-64 Cannon Street, London, EC4N 6AE, EC4N 6AE. By its SIC codes the business is in professional and technical services. It has traded under other names before, including Dashwood Communications Limited, Vendebitur (number 33) Limited.
Holding a licence is the expensive, slow part done. For Tavistock Communications Limited the question each time is only whether the role and the pay fit the current rules, and that is checked per vacancy.