Sources tell SUN Uk the cause of the couple’s big bust-up was Pete being back on tour – and presumably back to his old ways.

The pal revealed: “Kate is angry Pete is on the road so soon after being in rehab. He is clearly back on drugs and she can’t see how he can stay clean on tour.�?

Pete went to a pal’s place in east London. But after persistent calls from Kate, he relented and she sent her driver to fetch him at 6am.

Then, as Pete approached the house, she had a worker load up a car with her cat, his guitar and a couple of paintings before meeting him at the end of the street.

Meanwhile, The band Babyshambles has postponed the remainder of its British tour to give frontman Pete Doherty more time to undergo drug rehabilitation treatment, his record company said Saturday.

Babyshambles postponed its five remaining dates to allow Doherty's "excellent" efforts at overcoming his addiction to continue, EMI said.

"The band apologizes to fans but hopes that they will understand the importance of Peter being able to best continue his good progress in recovering from addiction," EMI said. "The dates will be rearranged for as soon as possible and all tickets will remain valid."