The Herald Scoliopteryx libatrix

Quite a smart species, this colourful moth overwinters as an adult,and is regularly found hibernating inside barns and outbuildings.

The adults are attracted to both light and sugar, and the species is fairly common and well distributed over much of Britain. The larvae feed on willow (Salix) and poplar (Populus). For more details see https://butterfly-conservation.org/1034-12813/herald.html