Stainland 20 October

The attached photos of an Angle Shades Caterpillar were taken last year. They are simply a cross check reference for David with his caterpillar post. The trouble is, David didn't give an proximate size of the cat he found.  I hope this helps, one way or another.

A quote from:

http://www.wildlifetrusts.org/species/angle-shades

"Larvae that hatch in autumn overwinter as caterpillars and pupate in the soil the following spring to produce the first generation of adults that year".

Angle Shades caterpillar.