Russell Brand has revealed he is a single man after splitting with Jemima Khan.

The 39-year-old funnyman, who was previously married to pop star Katy Perry, said he is enjoying the bachelor life for the time being as he spoke to Absolute Radio's Geoff Lloyd.

"I'm single," he said. "Well, you've got to go into relationships with the right attitude. All relationships, I'm always positive about them."

Russell, who has released a new book The Revolution, said he gives each romance his all, even if it doesn't work out.

"What's the point? I think always try your best in sort of everything you're doing," he continued, adding he takes his time before jumping into a relationship.

"I wish I was bisexual. That's one of the things about me where I've got a very traditional moral code. I'm tedious with my heterosexuality," he said.

The comedian, who has ruled himself out of running for Mayor of London, said being in a room with Hollywood stars such as Tom Hanks and George Clooney made him re-evaluate fame.

"When you're at a Vanity Fair party in Hollywood seeing the likes of Tom Hanks and George Clooney in tuxedos hemmed in, it's like being in a paddock of famous people," he said.

"I love any event where you see a lot of famous people together because it really undermines the fame. I once was in a room and I looked around it. There was Leonardo DiCaprio, Jack Nicholson, all these people in one room and it just made you realise, 'Hold on a minute. Fame is a load of old nonsense. Look at it. It's like everyone's just here, paddocked up, all daft'."