Have you got a feed to the coil?
The fuel metering plate seizes, but you should still have a spark.
There shouldn't be an immobiliser other than an alarm unit in the engine compartment. ( Cobra, Scorpion, or similar)
You could really do with a manual because there are too many things to mention on here. Google Rolls-Royce workshop manuals and you should find a few sources. They are on DVD and cheap - don't bother trying to buy a paper copy!