With their first UK festival headline slot approaching, Biffy Clyro played a one-off show in London in support of the Teenage Cancer Trust. 5,500 people? No big deal compared to a Knebworth full of people but after seeing them nearly 50 times in the past decade [yes, he worked it out and shocked himself], Thrash Hits editor, Raz popped down to Kensington Gore to see the Scottish superhouse in action.