The register
The register lists Kluster Enterprises Limited in London, 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 Kluster Enterprises Limited, number 09946422, incorporated 2016: 10 years of filings behind the name. The registered office is at 86-90 Paul Street, 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 Urulo Limited.
What the licence tells a candidate is that the door is not locked. Whether it is open this month is a question for Kluster Enterprises Limited's own careers page and the job boards, and the answer changes with the season and the order book.