cheers for the info guys i in the end opted to go to richmond by tube and then got the replacment bus to twickers,coming home was bit more difficult due to the replacment buses stopping running but thanks to a couple of your fans we got a bus to teddington and then took the south west train to waterloo where we then used the tube.
a bit of a nightmare getting back but we did it in time to get our train back although plans to get a bite to eat were quashed so we made do with mcdonalds at kings cross.