Sorry had to pop out for a bit. To confirm it is a 2.25 petrol and is fitted with a defender ignition. Looked at paddock spares and was surprised at the price for a series ignition £66 are they having a laugh. Anyhoo have got a spare defender ignition and will fit that tomorrow and see if thats the problem. Also disconnected the battery with the ignition off and the engine is still running does that mean anything at all. Thanks for all your replys much appreciated.