The musicians agreed to put their rock wisdom to good use by overseeing a battle of the bands contest at Camden School For Girls in the British capital.
The trio held up scores for the young students taking part in the competition during the school's fundraising summer fair on Friday (13Jun14).
Headteacher Elizabeth Kitcatt tells British newspaper the Ham&High of the celebrity judging panel, "We're a community school, which means the families mainly live in the neighbourhood and know each other. It's all very close and the parents at Camden are all very socially aware, so they will help. They are not the pretentious kind of celebrity."