Those lucky enough to get the opportunity to take a stroll around the Royal Courts of Justice are usually suitably impressed by the splendour and opulence of one of the world’s most well-respected legal institutions, where justice is observed and righteousness is the order of the day.

However, there is a lesser-known side to this fine establishment – if you nip downstairs and creak your way through the corridors, you might just stumble across the Courts’ very own state-of-the-art gym, which features of all of the latest mod cons, but set in a Harry Potter-esque alternate universe – not quite what you’d expect to find.