Since April 2010, he has been presenting a weekly jazz show on BBC Radio 2, broadcast on Tuesdays from .
His mother, Yvonne, is a secretary of Anglo-Burmese origin, whose family settled in North England after Burma's independence; his father, John Cullum, worked in finance.
"The notion of a standard is something that is 50 years old to most people.
Cullum was educated at Grittleton House School, an independent school in the village of Grittleton, near the market town of Chippenham in Wiltshire, followed by the sixth form of Sheldon School, a state comprehensive school in the same county.
Model Sophie Dahl and jazz musician Jamie Cullum, who have been dating for nearly three years, married in a romantic ceremony in New Forest on Saturday.
The couple took over the 29-room Lime Wood Hotel, near Lyndhurst, Hants to create a “winter wonderland” for their guests.
He told Jonathan that he was invited to P Diddy’s house for a party.
‘I’m like, ‘Oh my god, this is going to be like an MTV party that I’ve always dreamed about going to,’ so I spent all afternoon looking for the correct pair of trainers to wear,’ he explained.