The register
The register lists Proton Aviation Capital Ltd in London, Greater London as a licensed sponsor on Skilled Worker, an entry that goes back to at least 2026. The register records its rating as Worker (A rating).
Companies House lists it as Proton Aviation Capital Ltd, number 07778414, incorporated 2011: 15 years of filings behind the name. The registered office is at 1a Edith Villas, 123 Disraeli Road, London, SW15 2DZ, SW15 2DZ. By its SIC codes the business is in transport and logistics. It has traded under other names before, including Clement Gillman Limited.
For a candidate this means one less obstacle: Proton Aviation Capital Ltd already has the licence most employers would have to apply for. The rest is the ordinary job of getting the interview.