Round Onepublished at 21:14 British Summer Time 30 May 2015
A nice left jab gets Mitchell going in this fight, the Londoner racing out of his corner like a dog which has slipped its lead.
IBF welterweight: Champion Kell Brook beats Frankie Gavin
IBF featherweight: Lee Selby beats Evgeny Gradovich
WBC lightweight: Kevin Mitchell loses to Jorge Linares
Heavyweight Anthony Joshua stops Kevin Johnson in 2nd round
Marc Higginson
A nice left jab gets Mitchell going in this fight, the Londoner racing out of his corner like a dog which has slipped its lead.
Kevin Mitchell is on his toes in the corner, we're under way.
Richie Woodhall
Former super middleweight world champion on BBC Radio 5 live
"Just looking around the O2 I can't seen an empty seat, everyone's standing. The Lee Selby performance has really got this crowd excited. Kevin Mitchell is fighting a good boxer but it could be third time lucky for him. He's got a face of determination and he's got the tools for the job."
Kevin Mitchell's corner wave a West Ham football flag as their man is presented to the crowd. The Londoner has all of the support for this one.
Both men make their ring entrances. We're almost ready to rumble. Can Kevin Mitchell make it two British world champions out of two?
Ring announcer Michael Buffer is remaining impartial for the WBC lightweight title fight between Jorge Linares and Britain's Kevin Mitchell but he is predicting it won't go the distance.
"This fight, in my opinion, won't go the distance as both guys can bang," he told World Boxing News., external
"I've been at ringside for both of these fighters and it should be war."
Golden Boy promoter Oscar De La Hoya thinks WBC lightweight champion Jorge Linares will be too fast for British challenger Kevin Mitchell.
"Mitchell may have hometown advantage but Linares' speed and skill will give him a considerable challenge," he told Matchroom Sport., external
"Make no mistake, this will be a difficult fight for both guys and one that is sure to excite."
Former world champion Barry McGuigan: , external"Lee Selby, top class performance, great skill."
World Super Bantamweight champion Carl Frampton: , external"Lee Selby is unreal!"
Boxing promoter Dave Coldwell: , externalWhat a fantastic performance from Selby! Tell u what, he's arrived tonight"
Kevin Mitchell has a pretty cool fan - his fellow Eastender Ray Winstone.
"He's nawty, but a special talent," says Winstone in that unmistakeable style of his in a video profile of the fighter for this very website. Check it out, it's worth a butcher's hook (look!).
While Kevin Mitchell came in under the 135lb lightweight limit at Friday's weigh-in, the champion Jorge Linares scaled 4oz over. He returned to the stage an hour later and was comfortably under. That's a long time in the sauna.
Anyway, Mitchell believes his three-weight world champion opponent is "on the slide" and has promised a knockout.
"Four years ago he was great but he was always suspect around the chin," said Mitchell. "He's been chinned a couple of times at lightweight, which is big encouragement for me, and his last six fights [which included five knockouts] haven't been against great opposition."
That's that then.
BBC Radio Wales
New world champion Lee Selby: "It's amazing. I've got all my friends and family here, they've all driven down from South Wales. When my brother passed away in 2008 that was the point I turned my life around. I turned professional I used to be up to no good before that to be honest. If I could do that anybody can do it. I'll go home and have a fizzy water because I'm not allowed alcohol."
Former world champions Joe Calzaghe: , externalCongrats to Lee Selby on becoming new world champ!! Class performance!
BBC Radio 5 live
BBC Radio 5 live are in place for the Kevin Mitchell fight. Listen here.
What do you mean you don't remember Terry Nutkins? In truth, I was looking for a picture of a pet lion and that one came up.
Anyway in that excellent feature about Kevin Mitchell, the East End lightweight admits he squandered £180,000 in eight months of drinking. Boxing broke him, but it has made him again.
His star is back on the rise and he could end the night as a world champion. Sounds like an excuse for a big party?
Not a chance, as Mitchell says: "I've had some mental, mad parties, the craziest you can think of. But I don't miss it. I'm done with all that messing about."
And that is why his best years could yet be ahead of him in the ring.
Next up is Kevin Mitchell and, if you read just one other thing tonight, let it be Ben Dirs' excellent feature on Mitchell. After all, where else would you read the following sentence?
"Battling Siki, light-heavyweight world champion in the 1920s, walked his pet lion down the Champs-Elysees while wearing a top hat and tuxedo, with pistols on his hips."
Unfortunately it didn't end well for Siki.
Like countless boxers before him, Mitchell has had his problems but, as Ben finds out, those are all in the past.
New world champion Lee Selby tells Sky Sports Box Office: "I can't explain how I feel. I've been working for this for so long. I had my first amateur fight nearly 20 years ago.
"I caught him and he wobbled. I was going to break him down and put on a show for the fans. We had two accidental clash of heads but I'd won every round up until then."
Gary Lockett
Former WBU middleweight champion on BBC Radio Wales
"Absolutely fantastic. I just felt Selby was doing the better work on the back foot. Selby is deservedly Wales's most recent world champion."
That was a seriously good display from Lee Selby. He was in the company of a quality fighter and he made a previously unbeaten man look distinctly average. Not a bad night's work.
Gary Lockett
Former WBU middleweight champion on BBC Radio Wales
"Regardless of the stoppage, Selby was well in control. I had him clear ahead in rounds. He really bust him up in the last two rounds. He would have stopped him anyway there's no doubt about that."