Yeah it's still under warranty, just! I do alot of miles and I'm on 57k now so nearly out of warranty period! But don't want to have to pay to get it fixed when the warranty runs out so trying to get it sorted asap!
Like I said, dealer told me there were no fault codes and don't see why a fault code wouldn't show up if it was the coilpack, but can't think of anything else obvious that it would be?!?