Large Moth

Observation - Large Moth - UK and Ireland. Description: Early evening I saw two large moths on white netting. They were off white with a few , 2 or 3 large grey smudges on each wing and about 10 cm in length. I can't find anything that big in moth books.

Early evening I saw two large moths on white
netting. They were off white with a few , 2 or 3
large grey smudges on each wing and about 10 cm
in length. I can't find anything that big in
moth books.