The register
The register lists Arctal Limited 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).
At Companies House the business is Arctal Limited (company number 14287639), a private limited company incorporated in 2022, 4 years ago. The registered office is at 86-90 Paul Street, London, Greater London, EC2A 4NE, EC2A 4NE. By its SIC codes the business is in it, software and media. It has traded under other names before, including Climate Aligned Company Ltd.
Holding a licence is the expensive, slow part done. For Arctal Limited the question each time is only whether the role and the pay fit the current rules, and that is checked per vacancy.