The register
The register lists Tab x Tab Limited 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).
At Companies House the business is Tab X Tab Limited (company number 10362314), a private limited company incorporated in 2016, 10 years ago. Registered office: 71 - 75 Shelton Street, London, WC2H 9JQ, WC2H 9JQ. Its filed activity puts it in hospitality.
For a candidate this means one less obstacle: Tab x Tab Limited already has the licence most employers would have to apply for. The rest is the ordinary job of getting the interview.