The register
The register lists Sivak Accountancy Ltd in Harrow, Middlesex 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).
Sivak Accountancy Limited is the registered name (Companies House number 05453997), a private limited company on the register since 2005. The registered office is at 454 Alexandra Avenue, Harrow, Middlesex, HA2 9TL, HA2 9TL. Its filed activity puts it in professional and technical services.
Holding a licence is the expensive, slow part done. For Sivak Accountancy Ltd the question each time is only whether the role and the pay fit the current rules, and that is checked per vacancy.