Unidentified Caterpillar

Unidentified Caterpillar

Observation - Unidentified Caterpillar. Description: This caterpillar was seen in Gloucestershire, just to the north of the Forest of Dean. I've looked in a couple of books but can't find anything quite right.

This caterpillar was seen in Gloucestershire, just to the north of the Forest of Dean. I've looked in a couple of books but can't find anything quite right.