The register
The register lists Treehab 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).
Companies House lists it as Treehab Limited, number 07428780, incorporated 2010: 16 years of filings behind the name. The registered office is at 11 Lowfield Road, Westhampstead, London, NW6 2PP, NW6 2PP. By its SIC codes the business is in security, cleaning and facilities.
What the licence tells a candidate is that the door is not locked. Whether it is open this month is a question for Treehab Ltd.'s own careers page and the job boards, and the answer changes with the season and the order book.