Moth in Twickenham

Moth in Twickenham

Observation - Moth in Twickenham. Description: This moth was on an outside door most of the day. It was about one and a half inches long. Very attractive grey with patterns. I'd like to know what type it is please.

This moth was on an outside door most of the day. It was about one and a half inches long.
Very attractive grey with patterns. I'd like to know what type it is please.