Unidentified caterpillar

Unidentified caterpillar

Observation - Unidentified caterpillar - UK and Ireland. Description: Fairly large caterpillar - about 5cm long and on a cow parsley plant. Closest match I could find in Chinery was a large yellow underwing. Could it be this?

Fairly large caterpillar - about 5cm long and on a cow parsley plant. Closest match I could find in Chinery was a large yellow underwing. Could it be this?