The secrets of a Sheffield brothel are set to be revealed to a nationwide television audience tonight – including tales of a girl who has sex 15 times a day, a man who enjoys rolling in 69p tins of custard and customers who wear nappies. Sheffield’s City Sauna will come under the spotlight once more in A Very British Brothel, which airs tonight at 10pm on Channel 4 and sees cameras return to the venue following an original eye-opening documentary in 2015.