John Lewis & Partners has launched a winter carnival up on its rooftop, with an Americana-inspired theme. There’ll be fairground horses and bumper cars to snap selfies in, a curling station, and cosy house of fortune dens. Jimmy Garcia is in charge of the food and he’s gone diner style with popcorn shrimp, corn dogs, loaded fries and hot toffee apples, and you can sip on hot cocktails too.