I know that car, I've seen it. The seller allegedly paid c£5k for it earlier this year and its true he bought it from a long standing owner who had left it in the garage for years and obviously not kept up to date on prices.
It has been untouched for a long time and needs a full repaint, usual trim pieces/rubbers sorting and more likely a top end rebuild given the age of manufacture as it was smoking more oil from leaks than the batmobile.
I reckon to sort it properly needs c£15k retail to spend and with the original purchase cost still makes a good proposition. The owner was reluctant to spend that sort of money as I believe he 'took a punt' buying it in the first place knowing nothing about them and looks to be going for a quick turnaround.
IIRC it will be on D90 wheels as the wheels that are on it in the picture are the wrong offset and only used to move it around.