Moth found in grassland

Moth found in grassland

Observation - Moth found in grassland. Description: Silvery-translucent wings. I've tried to find it in my moth book, but was unsuccessful. Any ideas? Feeding on bramble flower, mid afternoon, in nature reserve, Radway Meadows, Warwickshire. Wingspan about 3cm?

Silvery-translucent wings. I've tried to find it in my moth book, but was unsuccessful. Any ideas?
Feeding on bramble flower, mid afternoon, in nature reserve, Radway Meadows, Warwickshire. Wingspan about 3cm?