Superstar DJ Mark Ronson, the pop guru behind Amy Winehouse and Lily Allen, has split from his girlfriend, Agent Provocateur model Daisy Lowe – with friends blaming the 14-year age gap between them.

The sudden split follows a heated argument four days ago. A source said: ‘Mark is not coming to London. He and Daisy had a row over something small which escalated into something rather big.

A source said: ‘Despite his party-boy image, Mark’s quite serious and just wants to meet the right girl and settle down. That was an issue for Daisy, who is still quite young at heart.

Celebrity couple Mark Ronson and Daisy Lowe were looking rather worse for wear this morning after a pub crawl through London

After Ronson took to the stage at the O2 Wireless festival with Jay-z, the couple then moved on to Soho club Paper, a regular haunt of celebrities and reality TV stars.

The couple partied at Paper night club till 1.45am and moved onto to their usual haunt, the Notting Hill Arts Club in west London.

The couple joined London singers Adele and Jack Penate at the club, where they stayed till 3am.