Hi Les
I recently aquired a 2.25 Ltr series petrol engine which I'm doing a 'slow' rebuild on i.e. I've taken it apart to see how it works and will be slowly putting it back together. You're welcome to it if you want it as a replacement for your diesel lump. Apparently it was a 'runner' before I got it, but I know little of its history. I've only just taken the head off and it looks alright. There's a fair amount of carbon build up and the valves look asthough they need replacing. 3 of the piston tops look fine, but one has a small chunk out of it so will need replacing. You're welcome to come and have a look if you want. I'm in Swindon also (you recently did the timing belt on my 200tdi!).
Cheers,
Ant.