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 small but growing population exists in London, -- these in northwest London.
Usually the underwings are red with black spots but sometimes they have a yellow background. Wingspan 42-52mm; UK flight time Jul-Sep.
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.