Found this caterpillar today, really like the olive and black pattern on the eyes! Stunning. Haven't managed to ID it yet so I'm back on here. It looks a little like a Barberry carpet but the eyes are too different. The lumpy wartiness and colouring have the same feel though. Might it be a related species? I'm presuming it's a moth... as far as I know, only the Spotted wood butterfly overwinters as a larva. Then again, it could be a fly larva. Hmmm. Anyway, any thoughts are much appreciated.