Russell Brand splits from Jemima Khan?

Funnyman Russell Brand and partner Jemima Khan have reportedly called time on their relationship following just a year of dating.

The couple have also unfollowed each other on Twitter, reported Daily Mirror.

"The relationship's simply run its course," a source said.

The pair have been dating since last summer.

Brand, 39, was a regular overnight visitor at her Oxfordshire mansion, which she shares with her two sons from her marriage to Pakistani cricketer-turned-politician Imran Khan.

Khan and Brand, who was previously married to pop star Katy Perry, were often seen walking arm-in-arm.