Just to update on the fault I had in the first post. Had a ECU upgrade, after the fault I had with the engine warning light. They could still pick up the log of faults from the diagnostics so there was not a issue with the AA resetting it. The engineer showed me the fault from the ECU to the cylinder head sensor, he updated the ECU and remapped sensor and hey presto no fault. Brill. Many thanks guys for all the comments and recommendations that came thick and fast, but the most important thing is get it to the dealer ASAP.