UK comic Russell Brand is ready to have children - but his girlfriend Jemima Khan isn't as eager to start a new family.

The 38-year-old comic is smitten with girlfriend Jemima Khan - who already has sons Sulaiman (17) and Qasim (14) from her marriage to former cricketer Imran Khan - and is keen for them to get married and start a family together.

A source told Grazia magazine: "Russell has made no secret of wanting children. It's all he talks about. They are also planning to get married. But it seems that starting a family is Russell's priority."

However, Khan (40) has yet to commit herself to more children. According to the source: "She is totally smitten with Russell but she's still got her head screwed on, so any future decision will not be taken lightly."

The comic's desire to have kids is believed to be one of the reasons his 14-month marriage to singer Katy Perry broke down in December 2011.

Perry has since admitted: "Russell really wanted me to have children and I knew I wasn't ready. I think it was a way of control; I'd have to be home more."