If you want to go to a pizza place go to Strada. All the food's really fresh, the pizza's are cooked in a wood-fired oven and it's nowhere near as corporate as Pizza Express.
The best pizzas in town.

You are not allowed to book at Strada in Wimbledon but we asked specially to do so as it was my daughter's 18th and we had 16 coming. After several phone calls, they agreed and I also rang 2 days before to confirm. However, when we got there we weren't expected, so after much to-do, we finally were seated. This ruined the start of a good evening. The food and wine is good, it is obviously popular at the medium range for Italian restaurants (although our waiter was not overly cheerful and not Italian). In hindsight, I wish we'd gone to Al Forno in Wimbledon town where the food isn't quite as good but the atmosphere and staff are loads better.