Sharon Osbourne talks about plastic surgery and her split from Ozzy, Colin Farrell reveals his love of yoga and Mary Poppins, Jeremy Clarkson agrees he's an embarrassing father and Jo Brand says the scripts she gets are not appealing.

Sharon Osbourne, talking about her split from and reconciliation with Ozzy, says, "We are fine now. When you've known someone 40 years a lot happens. It all fell apart when he relapsed. It was the combination of drugs and drink and it was like, 'No, not again,' so I moved out. We are back together and it is all down to him, he is on the 12 steps and he is clean and sober. He stopped because he knows what he was going to lose, not just me but everything. He says we're like bread and butter. We fit together so perfectly. We are a team and the hardest thing I ever had to do was walk away."

Sharon, talking about plastic surgery and a particularly intimate procedure she describes as, "Just excruciating," says, "Having it tightened was the worst, it hurt a lot." Asked if she thought it was worth it, she says, "My husband thinks so. It's back the way God wanted it to be." Jo Brand quips, "I did mine at home with a Singer sewing machine."

Revealing she has regrets about the way she parented her children, Sharon says, "Being there for the kids was the hardest thing. We both worked to continue a lifestyle we had become accustomed to and we had to travel so my kids spent quite time away from us and you can never get that time back. It was the biggest mistake I ever did, but would I have wanted to live a lesser life? You make the most of what you have," adding, "I don't know how but Jack and Kelly came out just great."

Asked if Sam Bailey is going to win X Factor, she says, "Nothing is a given. Technically, voice wise and personality wise she is an absolute winner but we still need those wretched votes." On whether she is still getting on with Simon Cowell, Sharon says, "I never see him so it's fine."

Colin Farrell, revealing himself to be much calmer than his old self, says, "I'm mad on Yoga, I love it and do it every day." Asked if he finds it embarrassing doing it with a group of strangers, he says, "No, not when I've done the things I have done that are highly embarrassing."

Asked if he met Tom Hanks and Emma Thompson while working on his new film Saving Mr Banks, as he doesn't share any scenes with them, Colin says, "I knew I wasn't going to get to work with any of them so threw a dinner party at my house. We all ended up watching Mary Poppins. Everyone was in the living room watching, it was cool," adding quickly, "Well maybe not that cool, but it was fun."

Talking about a recent road trip across America, he says, "It was great fun. Eating is the reason to do it. I put on 15lbs in two weeks driving coast to coast. It's not stuff you would find in the Egon Ronay guide and we used the places in the TV show Drive-ins, Diners and Dives as our GPS. It was amazing!"

Jeremy Clarkson, talking about his children and asked if he is a really embarrassing father, says, "Only when I speak, or move, or be in the same room as them. I mean can you imagine how awful it must be to wake up knowing I am your father."

On the extreme reactions he elicits from people for his outspoken opinions, Jeremy says, "It is shocking. The other day some environmentalists threw horse manure over my garden gate and into my rose bed. They can throw some more if they want to fertilise my garden."

Jo Brand, talking about the success of Getting On, admits she didn't go to America for the US version of the show, "I didn't want to go. Is that a bit weird? I have never been to America and there are lots of other place in the world I would rather visit."

Asked if she will do more acting other than her upcoming panto role, she says, "I get scripts all the time but they are not always awfully appealing. I got sent one not so long ago and I looked up my character and it said, 'This person is fat and hideously ugly.'" Eliciting unexpected sympathy from the audience, Jo makes it very clear she couldn't care less!

Arcade Fire performs After Life live in the studio before joining Graham to chat about their new album.