Ok, a bit of clarity here. It was my mum that bought the car not me, so don't flame me as most people have over the past couple of pages.
Secondly, she went to see the car and it had no sunroof, we were't bothered about that as much but it's an element we can use against them, under false advertsing.
As regards to the wood thing, we only realised after getting it home, getting a mechanic friend to take a look at it and take the door panel off, where the mech should have been was a plank of wood. Externally the electric window switch was there, there was just no mech. The dash panel says that the coil's gone but we reckon it could be the choke sticking as it's supposed to be a new coil.
Thanks to those that actually have given decent advice, we sent the bloke a letter as advised by trading standards two weeks ago via recorded delivery, it was signed for and we had no response. Trading Standards say we can take him to the small claims court but it'll cost £170 (and as the car only cost £600 + £200 from our old one in part exchange).
The car itself was advertised on Autotrader, that's what I mean by "advertised as" and nowhere did it say the car was faulty. I figured it might come under being unfit for purpose