The register
The register lists East Shack Ltd in London as a licensed sponsor on Skilled Worker, an entry that goes back to at least 2026. Its rating on the register is Worker (A rating).
Companies House lists it as East Shack Ltd., number 11605114, incorporated 2018: 8 years of filings behind the name. The registered office is at 61a Alie Street, London, E1 8EB, E1 8EB. Its filed activity puts it in retail.
For a candidate this means one less obstacle: East Shack Ltd already has the licence most employers would have to apply for. The rest is the ordinary job of getting the interview.