Ok, jumped in the car and found that the immobiliser wouldn't turn off by using the electronic blipper or the manual immobiliser key. The light just stayed on. After removing the panel to get at all the wires etc. and spending half an hour looking for the damn unit that is the core box for the immobiliser, i'm left none the wiser. Its the only thing that I couldn't see. Thot I had it for a second when the wires I thot that were leading to the box ended up being the FCD. So many intertwined wires its easy to get lost. I was looking for the fuse to see if that might have been the problem. The only one I could find was heavily taped up and I wasn't convinced that it was connected to the immobiliser unit. If anyone has any suggestions as to what it might be I would very much appreciate it.