The Olympic cauldron is lit, Liam Phillips, Oscar Pistorius, Hollie Avil and Tom Daley

In a week where Olympic excitement finally arrived in Great Britain, we hear from a gripped BBC Devon as the Olympic cauldron is lit for the first time in Plymouth. BMX champion Liam Phillips speaks about his return to the sport on the eve of the World BMX Championships in Birmingham. South African double amputee Oscar Pistorius tells 5 Live’s Shelagh Fogarty about his extraordinary efforts to qualify for both the Paralympic and the Olympics. BBC Ulster’s science programme “What Next?” looks at mental preparation for the Games while former British champion, Hollie Avil, reveals how an eating disorder has prompted her to retire from elite sport. Diver Tom Daley sends a message to his Chinese rival Qu Bo after winning European Gold. And American John Carlos recalls his black power salute at the 1968 Olympics which sent shockwaves around the world.