Silence is golden: (from left) Dipali Patel, 17, Anjana Pindoria, 17, Asha Thakrar, 18, and Rupal Pankhania, 17, raised £1,350 for Indian earthquake victims by keeping mum for a day. The foursome, students at Albany College in Queens Road, Hendon, then had their sponsorship doubled by generous headteacher Bob Arthy. "Despite the best efforts of friends and teachers none of them uttered a word," he said Photo: PETER BEAL