New to me- a wave moth? But which one?

New to me- a wave moth?  But which one?

Observation - New to me- a wave moth? But which one? - UK and Ireland. Description: About 30 mm across, flattened against inside wall, Harrow, NW London. Distinctive pale tan colour, beautiful wave-like markings and very spotty in closeup.

About 30 mm across, flattened against inside wall, Harrow, NW London. Distinctive pale tan colour, beautiful wave-like markings and very spotty in closeup.