Adam I have just bought my zed from pics and talking to the guy only, had to send a £500 deposit to hold it , was a 3 hour train journey to get it and a 3 hour drive back but was deffinately worth it .you tend to get a feel if buying the car is right by talking to the buyer in detail and plenty of pics. My advice would be to book a one way train down and go as if you where deffinately buying the car to bring it away, if the car is not as described or your not happy it's the cost of the train back, but I would be confident that the car is spot on and well worth the journey!