The presenter was criticised after butting in on the 'Someone Like You' singer seconds after she took the stage to pick up the best album award because time was tight following a rambling acceptance speech by Blur's Damon Albarn.
He said organisers had no plans in place last year if timings did not go tight and said he did not know if anything was in place tonight.
He told Radio 1's Newsbeat: "Hopefully we'll be okay. I haven't given it a huge amount of thought. I hope that we'll just run on time."
The event at the O2 in Greenwich, south-east London, is shown live on ITV1 and could see Amy Winehouse pick up a posthumous Brit Award after she was shortlisted for best British female against acts including Emeli Sande.
The late star - who died 19 months ago - took the title in 2007 on the back of her massive Back To Black album.
Sande, Mumford & Sons and Mercury Prize-winners Alt-J lead the nominations, competing for three awards each.
Veteran stars the Rolling Stones have been nominated for best live act - the first time they have been in the running for a Brit for 17 years. And it is the first time they have been shortlisted for anything other than best video since the very first Brit Awards in 1977, when they competed for best group, losing out to the long defunct Beatles.
The big award of the night - best album - will be fought between Sande's Our Version Of Events, Alt-J's An Awesome Wave, Babel by Mumford & Sons and Plan B's Ill Manors. Paloma Faith is also up for the title for her second album Fall To Grace.
Sande and Faith go up against each other once more in the British female category, with Bat For Lashes (Natasha Khan), Jessie Ware and Winehouse completing the contenders. Sande's final nomination is as one of the 15 tracks in the running for best single with Next To Me.
The best male shortlist sees Richard Hawley go up against Olly Murs, Calvin Harris, Plan B and Ben Howard.
Mumford & Sons will line up against Alt-J again for best British group, with The xx and Muse. Pop act One Direction - who will be performing on the night - complete the category after a year which has seen them conquer the US.
Coldplay, Mumford & Sons, Muse and The Vaccines are the bands who will challenge the Stones - who performed two UK shows at London's O2 Arena to mark their 50th anniversary last year - for the best live act title. The prize is making a comeback after being rested since 2009.
Adele is among the acts up for best single, with her Oscar-nominated Bond song 'Skyfall'. Others in the category include Jessie J for Domino and 'X Factor' winner James Arthur with his chart-topping single Impossible.
The 2011 'X Factor' winners Little Mix failed to get a single nomination for this year's Brits, despite releasing their debut album in the qualifying period.
Rihanna leads the field in the shortlist for international female act and stands a chance of becoming the first person to win the prize in three consecutive years. She is up against Alicia Keys, Cat Power, Lana Del Rey and Taylor Swift, which raises the prospect that Swift may attend the event and bump into her One Direction star ex, Harry Styles.
Winehouse, who was eligible as a result of the release of her Lioness: Hidden Treasures album, is thought to be the first nominee to be included posthumously.
Although Freddie Mercury won a Brit in 1992, a little over two months after his death, that was an honorary award for his outstanding contribution to music.
Other performers who will play at the ceremony - officially called the Brit Awards 2013 with MasterCard - include Muse, Robbie Williams and Sande.
The outstanding contribution prize is being dropped this year, with organisers introducing a prize honouring Brits' global success, which is expected to go to Adele, although One Direction and the Mumfords are thought to be in the running.
A special recognition prize will be presented to the charity Warchild.
1988: Bananarama and a whole load of semi-naked flesh Despite promising Brits organisers during rehearsals that they wouldn't include their semi-naked male dancers in their performance, the Bananarama girls went ahead and did it anyway. Naughty. It was also marked the final ever performance of the three original members.
1989: Sam Fox and Mick Fleetwood show how NOT to present an awards show Oh where to start? The height difference? The dodgy autocue? Their complete inability to ad lib? Soooo awkward, totally riveting - it was an undiluted shambles of a night.
1996: Jarvis Cocker storms the stage during Michael Jackson's performance The Pulp front man took exception to Jacko's performance of Earth Song that culminated with the late King of Pop looking like a 'Christ-like figure' whilst surrounded by a stage full of children. Jarvis was later arrested - and subsequently released without charge - when he was accused of hurting three of the children on stage. Drama!
1997: Geri Halliwell's Union Jack dress Spice mania was in full swing both here in the UK and in the US (and well, everywhere really) when the all-conquering Spice Girls took to the Brits stage in 1997. But it was Geri Halliwell's Union Jack dress - a last minute update to the black number she had planned - that really stole the show. The outfit, created by Geri's sister who sewed a tea towel on to the LBD - went on to sell for a record-breaking £41,320 at auction.
1998: John Prescott gets a soaking Proving perhaps, that politics and pop really don't mix, when the then Labour Cabinet Minister attended the 1998 bash, indie band Chumbawamba thought they'd let him know exactly how they felt about him getting an invite by throwing a bucket of iced water over the MP. Brrrr. Despite apologies from the band's record label, they were unrepentant, saying: "If John Prescott has the nerve to turn up at events like the Brit Awards in a vain attempt to make Labour seem cool and trendy, then he deserves all we can throw at him."
2000: Ronnie Wood throws a drink over DJ Brandon Block A rather errrm, refreshed Brandon Block (remember him? No? Us, neither) took to the stage after his friends told him he'd won an award (he hadn't), cue initial bemusement from on-stage presenters Ronnie Wood, actress Thora Birch and Davina McCall, swiftly followed by insults, which culminated in the Rolling Stones guitarist throwing a drink over the DJ. Like he hadn't already had enough?
2000: Robbie Williams challenges Liam Gallagher for a fight After a series of bitchy pot shots from the Oasis front man aimed squarely at Robbie (the most infamous being when he referred to Robbie as "the fat dancer from Take That"), Robbie took the opportunity at the 2000 show to challenge Liam to a scrap. Taking to to the stage, he asked the crowd: "So, anybody like to see me fight Liam? Would you pay to come and see it? Liam, a hundred grand of your money and a hundred grand of my money. We'll get in a ring and we'll have a fight and you can all watch it on TV". Sadly, Lima didn't take him up on his offer. Scaredy pants.
2003: Justin and Kylie get down and dirty Justin Timberlake became the envy of men across the nation when he got to grips with her famous behind as she joined him on stage to perform Blondie's 'Rapture' at the 2003 ceremony.
2004: The booze is back After alcohol was banned for a few years previously, Brits host Cat Deeley welcomed it back by arriving on the stage on top of a champagne bottle in a sexy ringleader outfit. What they were thinking banning it in the first place is beyond us - the Brits without booze is like Daphne without Celeste.
2007: Errr, when did Joss Stone become American? It had been a few years since we'd seen Joss Stone when she presented Best British Male to James Morrison in 2007, and during that time she seemed to have become American. The soul singer baffled audiences with her US twang and bizarre tribute to Robbie Williams as she strutted round the stage like she owned the place.
2008: Sharon Osbourne vs. Vic Reeves After Vic Reeves appeared to be slightly under the influence when presenting the Arctic Monkeys with their award for Album Of The Year, host Sharon Osbourne unleashed a four-letter tirade at him, nicking the winner's card and announcing the result herself. What's almost better is Mrs O screaming at the lads to 'hurry up and say something, we're running out of time', before being caught heard asking daughter Kelly, 'what have they come as?'. Skip to 1.53 to see the action.
2011: Adele becomes a global superstar after performing 'Someone Like You' How do you silence an arena of 15,000 people? Simple, just get Adele to perform. The Brit singer stole the show at last year's show with her stunning performance of her million-selling hit, 'Someone Like You'. Twelve months later and she's a household name on both sides of the pond.
2012: Adele flips the bird The nation was outraged when star of the moment Adele was cut short by James Corden during her acceptance speech for Best Album. She responded by flipping the bird at the Brits bosses for not letting her have her (well deserved) moment. Go on, girl!