Mick Philpott is in the witness box at Nottingham Crown Court explaining how traces of petrol got on his clothes.
He says the fuel had spilt from a petrol grass strimmer that he had lent to his neighbour Adam Taylor.
More top news
The fast mover in lane eight enjoyed the freedom of one of the world's most famous landmarks and refused to be slowed down by the law.
Inflation has dropped from a near six-year high, as falling clothes and toy prices helped ease pressure on household finances in December.
The four-time Olympic champion said on Twitter: "I am not afraid to tell my story anymore."