What is it? 60 percent off four cocktails, a cabaret show plus a £20 voucher to spend in the M Restaurant on your next visit. When is it? Friday April 20 from 7.30pm to 1am. Why buy? This spectacular evening will see a series of vintage and burlesque stars strutting their stuff in the smokey dining room at M Victoria Street. Add that to a taste-bud tingling selection of 1920s-inspired tipples and an art deco-inspired theme, and you’ve got a pretty swanky evening on the cards. In the words of R Kelly, 'After the show it's the afterparty’ – so naturally, you're also invited to the exclusive cast after-party which rolls on until the early hours. This will be taking place at M DEN, a secret private members club which will be open to Time Out customers just for this one-off event. Get involved in this glorious evening of drinking, dancing and some incredible performances. Tickets are now just £40. This is valid for one ticket to M Cabaret at M Victoria Street. Upon arrival customers will also receive a £20 voucher to spend in the restaurant on their next visit. Over 18s only. This booking is only valid for your selected option. Tickets are allocated by the box office and not by Time Out. Customers purchasing multiple tickets in the same transaction under the same name will be sat together. This booking cannot be cancelled, refunded, exchanged or used in conjunction with any other offer.