Punchdrunk's Sleep No More: is this a sell-out which I see before me?
Rarely have I seen a more money-grabbing show than Punchdrunk's current reworking of Macbeth, which has wowed New York's critics, but left me feeling short-changedI had no problem when Punchdrunk created a promenade piece, The Night Chauffeur, to promote a new tipple for Stella Artois. I didn't flinch when they transformed London's Old Vic Tunnels into a hellish underworld to help flog a Sony computer game. In these …