Hi guys,
Thanks again for replies!
Just had another e-mail from seller - main points:
"...she is open for negotiation on the price but wouldn't like to go lower than £1000 for it...the only thing I hadn't mention on the state of the car is that the drivers side window can be temperamental. She said basically sometimes it works without a problem, other times it takes a few presses of the window button to get it to move. I guess there is a loose connection somewhere."
So, my last question to you all is - could this be an expensive thing to fix and should therefore be considering another car or is it still a reasonable deal?

Cheers,
Chris
[edit: think the reason the 3 is better on fuel is that the body of the 5 door version likely weighs a fair bit more.]