In what appears to be a personal contract across multiple cover groups, Mariah Carey is the newest member of station staff at Waterloo, Stratford and London Bridge. Although Tubeworker hasn't spotted her on the gateline.
Perhaps the Mayor can ask for some of her reported $520m (Earning only slightly less than a Train Op, h/t the Evening Standard) to plug the central government funding gap. Sister Carey has taken over the safety announcements, reminding people to stand behind the yellow line and to hold on to the handrail...Oh and she gets to plug her new album too.
At this time it's not clear how much she has been paid but no doubt, against all odds an intrepid FOI request from a respectable journalist will get to the bottom of it. Tubeworker just asks that she don't forget about us if she goes back to her potentially less lucrative career.