The register
The register lists Scarlet O2 Ltd in London as a licensed sponsor on Skilled Worker, an entry that goes back to at least 2026. The register records its rating as Worker (A rating).
At Companies House the business is Scarlet O2 Limited (company number 11450152), a private limited company incorporated in 2018, 8 years ago. Registered office: 12 Helmet Row, London, EC1V 3QJ, EC1V 3QJ. Its filed activity puts it in hospitality. It has traded under other names before, including Scarlet Restaurant Limited.
What the licence tells a candidate is that the door is not locked. Whether it is open this month is a question for Scarlet O2 Ltd's own careers page and the job boards, and the answer changes with the season and the order book.