What is the prettiest, most quaint, leafy London commuter town in the Home Counties?

Question

What in your opinion is the most beautiful, picturesque, and pristine commuter town outside of London?

I know I'm just begging for every wise-guy and smart alec in the UK to pipe in here with some sarcastic reply to this question, but I ask that you only give serious, thoughtful, and descriptive answers to this querie. Please feel free to joke away on any of my other questions.

Answer 1

Westerham, Kent and surrounding villages including Edenbridge. Very near to M25 and served by fast commuter services to Victoria and London Bridge. The settlements are small, and surrounded by countryside yet close to Greater London.