|Maybe Louis Patisserie in Hampstead? |
It's a bit dark, the furniture is pretty antique, it has comfy benches along the walls but mostly the cake is just yummo! You cross the road at the lights out of Hampstead tube and walk along the road that goes across rather than down the hill. It's on the left, you'd want to check it out. The photo is a different branch of the same patisserie.