We stayed for the October half term week at Abbey Wood. It really is a beautiful, calm, tree filled oasis in London. The sweet chestnuts were plentiful when we were there for any adventurous caravan cooks out there! It's a short walk to Abbey Wood station from which there are very regular trains to central London taking around half an hour. Crossrail is coming to Abbey Wood which will make it faster. There's also a new enormous Sainsburys with parking nearby so you can be well supplied. Great staff, usual excellent CC facilities. Recommended