The register
The register lists Marketing Fish Ltd 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 Marketing Fish Ltd, number 13447335, incorporated 2021: 5 years of filings behind the name. The registered office is at The Harley Building New Cavendish Street, Spaces, London, W1W 6XB, W1W 6XB. By its SIC codes the business is in retail.
Holding a licence is the expensive, slow part done. For Marketing Fish Ltd the question each time is only whether the role and the pay fit the current rules, and that is checked per vacancy.