Rules restaurant in Covent Garden is where old duffers go to eat game and talk about hip replacements. But if you squeeze past the liveried doorman and head up the side stairs, you’ll find a fantastically camp old school gentleman’s cocktail bar; no need to have a dinner reservation. Its best bit is that you get a slab of stilton to go with your drinks - random, salty and fattening but low carb - just how we like it.