We were making the most of the children being away and visiting old friends in London when one of them alerted me to the presence of an interesting moth at the front of the house on Camberwell Grove. It was flying around showing vibrant red underwings and my initial thought was that that was what it was. However, when I got home and looked it up it turns out to be the Nationally Scarce 'B' Jersey Tiger moth, Euplagia quadripunctaria.
Until recently it was confined to the Channel Islands and south-west coast of England, but in the last ten years a colony has established in Forest Hill in south London, where presumably this one originated. Its range appears to be expanding.