Long Black furry caterpillar

Long Black furry caterpillar

Observation - Long Black furry caterpillar - UK and Ireland. Description: It crossed my path so was not on any food source, about 4in long which seemed very large for a British moth caterpillar and was covered in thick black hairs. Also 30 Sept seemed very late. Can't find match in my insect book.

It crossed my path so was not on any food source, about 4in long which seemed very large for a British moth caterpillar and was covered in thick black hairs. Also 30 Sept seemed very late. Can't find match in my insect book.