Thank you all for your help!
I had considered a taxi of any sort but as its 5pm and full on rush hour I thought the traffic would be memtal and may sit in it for longer?
How far is Uxbridge? Its all such a minefield with trains and undersgrounds and stuff. I feel as if I dont know which is best. So is id there a station called Wembley and one called Wembley Park? Are they close even and the same mode of transport ie both trains?