Was hit by a car when he was 9. Doctors said he had almost no chance of surviving and if he did, he'd be brain-damaged. Jamie was in intensive care for 3 days and when the doctors were about to give up hope, a family friend of the Waylett's demanded the doctors to check his blood. They gave Jamie a blood transfusion and he woke up the next day and started to improve.
Once met with President George W. Bush in 2003.
Audition for the role of Dudley Dursley before accepting the role of Vincent Crabbe in the Harry Potter series.
On 20 March 2012 he was jailed for two years for violent conduct and one year for handling stolen goods during the London riots of August 2011.