The register
The register lists M-mart Limited in Watford 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 M-mart Limited (company number 09649122), a private limited company incorporated in 2015, 11 years ago. The registered office is at 55 Queens Road, Watford, WD17 2QN, WD17 2QN. Its filed activity puts it in retail.
What the licence tells a candidate is that the door is not locked. Whether it is open this month is a question for M-mart Limited's own careers page and the job boards, and the answer changes with the season and the order book.