|LEH/Hampton run a wide ranging service of school coaches but as far as I know tiffin doesn't.|
As a regular commuter to Richmond I have often seen pupils from Tiffin girls on the tube from Turnham Green and then going up the stairs at the station to catch the 65 to the school. It might be worth doing a dry run maybe this week as it's half term if you are trying to make a decision for this September. The girls I see are at Turnham green tube by 7.30 am generally. There are also pupils from chiswick who go to Kingston Grammar (not a grammar school) and they might be able to advise.