The register
The register lists Knockbox cafe in London as a licensed sponsor on Skilled Worker, an entry that goes back to at least 2026. Rating on the current register: Worker (A rating).
Companies House lists the business as Knockbox Cafe Ltd, company number 17022234, a private limited company. The registered office is at 35-37 Clerkenwell Road, London, EC1M 5RS, EC1M 5RS. By its SIC codes the business is in hospitality.
What the licence tells a candidate is that the door is not locked. Whether it is open this month is a question for Knockbox cafe's own careers page and the job boards, and the answer changes with the season and the order book.