Current issue is that the mechanic is now unable to connect to the ECU, it was previously (and appears to still be from the dash light) throwing a fault for the temp sensor that seems to be all ok wiring/sensor wise from the ECU onwards, I've got one with no immobilizer that I'm going to test when it arrives and see if the same faults show.

Good to know you have some, if it looks like it is the ECU I'll pm you about potentially swapping the chip, thanks 😁