The register
The register lists Earth Agency Ltd in London 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).
At Companies House the business is The Earth Agency Limited (company number 08913373), a private limited company incorporated in 2014, 12 years ago. The registered office is at 293 Kenton Lane Harrow, Middx, HA3 8RR, HA3 8RR. By its SIC codes the business is in hospitality. It has traded under other names before, including Earth Agency Limited.
For a candidate this means one less obstacle: Earth Agency Ltd already has the licence most employers would have to apply for. The rest is the ordinary job of getting the interview.