Thanks everyone!
This site is awesome!
I'll try and start without the TPS connected and see what happens.
If its still getting too much fuel I'll try the wiring to the IP. Then failing that I'll take the side of the IP and see whats going on there.
To get it running... The replacement loom (if you could call it that!) was made up out of household earth cable (yet all yellow and green and the same size) I suggested to the previous owners that we buy a new upper engine harness or at least make a one properly but they didn't have the funds for that. I eventually managed to jump the shut off which after cleaning filters etc got the car starting.