Happy Face is a very big, very-child friendly all-day pizza spot in the basement of one of those slightly nondescript buildings that have popped up behind Kings Cross. Unless you’re the type who takes offence at simple things done well, there is very little to offend you here. The wood-fired pizzas are as light and doughy as they should be, and the tomato sauce on the £6.50 margherita is as sweet and rich as you’ll find anywhere in London. All of which makes this place well worth a visit before or after a film at the Everyman upstairs, or if you’re at Granary Square or Coal Drops Yard looking for an inexpensive meal.