Doing the drunk stuff was lovely, says Freeman, ‘but I regret there was one bit of that drunk stuff that was missing. There was the gay club scene. We were absolutely mullered in the gay club – lots of topless men going past, and us just going ‘Why are we here?’

Cumberbatch chimed in, stating how Sherlock felt about the situation: ‘I had no idea as to why they didn’t have their clothes on, and then it dawned and my grounding shook.’