Off on a tangent, I had to take the train from Barnes to Teddington a couple of times the last month, and was amazed how fast it was.
Living in this neck of the woods, it is easier to go into Kingston for some major shopping than central London, you have John Lewis, and you you have the Bentalls Center, which is pretty fab for shopping, hand bags, designer clothing, linen etc. Venture outside, and you have coffee shops, the Theater, furniture shops, Clothes, Outdoor gear and sports shops, and also nice little shops such as Jo Malone, Radley, Molton Brown, The White Company, a nice fruit and veg market.
When you live south west, it becomes the Center of your existence, and your wider circle becomes Hampton, Kingston, Wimbledon, and these are all some pretty fab areas! At the same time, Central London is within easy reach. High St Ken is 15 minutes drive from Putney were we live now, but equidistant to East Sheen. You can still go to the museums of Sout Ken, you just cant walk there. But that is a small price to pay for being just on the outskirts of the hustle and bustle and traffic.