Jersey Tiger Moth Euplagia quadripunctaria

Jersey Tiger moth
Jersey Tiger moth red underwing
The Jersey Tiger, active by day and by night, is found in the Channel Islands; some are also present in Devon, Dorset and Somerset and a recent, growing population exists in London - these in northwest London - spreading into the Home Counties currently.
Jersey Tiger moth
Jersey Tiger moth
Jersey Tiger moth yellow underwing
Usually the underwings are red with black spots but sometimes they have a yellow background. Wingspan 42-52mm; UK flight time Jul-Sep.
Jersey Tiger moth
Jersey Tiger moth
Above two photos from southeast London by Bob Clark (copyright Bob Clark). As usual, Bob manages to get the subject to pose on his hand.
Jersey Tiger moth
Jersey Tiger moth
The two Jersey Tigers above are from Emily Tutton, taken near the athletic (previously Olympic) stadium in Stratford, East London. She says the moth was "friendly and beautiful" and also manages to get a pose on her hand. She adds "I thought you might like the pictures as your site helped me to identify it!" (Always glad when the site serves its purpose.)
Jersey Tiger moth
Jersey Tiger moth
Jersey Tiger moth
The moth above left was photographed by Martin Starnes in his Surrey garden. The undersides of the other two above were on my NW London kitchen window. Martin adds: "I have now photographed thirty plus species in the house or garden in the last few weeks, most identified thanks to your website" - it's always good to know that the site is helpful.