I don't live too far. Well I'm Cambridge but its not too far. I can take a look at your motor, I've fixed them before !
Granted I used a wooden spoon and a pair of gardening gloves, but it worked.
Well in all seriousness when I bought mine I had issues that subsequently I fixed with a replacement of;
Fuel pressure regulator
Air mass meter
Head gasket replacement
Chassis straightening jig ( 90 into a pair of unsuspecting wheelie bins )
So as you can see its only a small list of things I've had to do in order to get my motor up and running
Now with extra seriousness, I had issues with the ignition module (ptu) and fuel pressure, in fact with a new pump it worked wonders on my vehicle. Anyway would be happy to take a look sometime if you get desperate. You've tried the best, now try the rest.