Hello Magnet
Thanks for the response.
You would think so wouldn't you given it was regsistered in 1999 12 months after immobilisers became mandatory? BUT it could well have been built in 1998 before it became a legal requirement. On the cusp as it were. It was on my list but I only have one key and it looks like an ordinary key to me with no transponder in the head of it. I have had a good look around too under the seats and the dash. Also, I did manage to find a list of fuses and their locations that match what's on the car and there is no reference to an immobiliser. So probably not got one.
I have actually just replaced the capacitor in the instrument cluster that I refered to above. I refitted the cluster to the car and it has certainly had an impact. The digital display in the center of the cluster was not working before. Now it is. So that's a good sign. The petrol gauge is also working now, but not the voltage gauge, and the car runs. But I'm not celebrating yet because that happened before. I have to wait and see if it stays like that before flying the flag.