The register
The register lists Aquastar Mechanical & Electrical 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).
Aquastar Mechanical & Electrical Ltd is the registered name (Companies House number 13569686), a private limited company on the register since 2021. The registered office is at 41 Bacon Lane, London, NW9 9AY, NW9 9AY. By its SIC codes the business is in construction. It has traded under other names before, including As Aquastar Plumbing & Heating Ltd.
Holding a licence is the expensive, slow part done. For Aquastar Mechanical & Electrical Ltd the question each time is only whether the role and the pay fit the current rules, and that is checked per vacancy.