The the price its a bit daft doing selective plugs.... just do them all.
True. Might as well. Think im going to just try clean the coil pack seal and see if that works - don't want to replace the whole coil pack (all joined, unlike ours in tfsi engines)
Also, not sure if its relevant, but the car has sat unused for a week whilst we were on holiday prior to the fault. normally gets used everyday.