Liam Gallagher has claimed if Oasis got back together they would put the likes of Kanye West and X Factor winners “to bed”.

Donning his traditional parka jacket and waving the standard two-finger salute to photographers, the Oasis frontman also revealed he misses his estranged brother Noel.

The 44-year-old was in London’s Leicester Square for a special first screening of a new documentary called Supersonic which details the band’s meteoric rise to stardom.

Speaking to the Press Association, the Mancunian said he is “not sure if Oasis will ever get back together”, adding: “You will have to ask the little man.

“I am ready to go, my bags are packed, we shouldn’t have split up – you know what I mean?

Liam Gallagher (Yui Mok/PA)

“He just wanted to do this thing, there is a lot of angst there.

“For someone to ruin my Oasis career to further his own, we have got to get past that a little bit.”

Asked if he missed his brother, who he has been at loggerheads with since 2009, the long-haired Britpop icon said: “Yeah, without a doubt.”

Noel and Liam Gallagher in 2008 (Zak Hussein/PA)

Liam also said Oasis were not the greatest band ever, adding: “We were one of them – definitely. And we still are.

“If we got back tomorrow it would be business as usual. Regardless of whether we are living in a Kanye world or a f***ing X Factor world, we’d put them all to bed I think.”

Supersonic documents the formation and rise of Oasis, from their council-estate beginnings to their record-breaking performance at Knebworth.

Created by some of the team from award-winning documentaries such as Amy and Senna, the film provides unprecedented access to the band.

Following the group through the early 90s, the documentary includes commentary from family and unseen archive material.

Liam said the two-hour film “brought back memories” and that overall he is “quite happy with it”.

Liam Gallagher (Yui Mok/PA)

He added: “I like it, it is raw, it’s not flash – it’s good. I like the bits I’m in.”

An avid football fan, particularly as a diehard Manchester City supporter, reacting to the Daily Telegraph’s probe into alleged football corruption, which resulted in former England manager Sam Allardyce leaving the role by “mutual agreement”, he said it was “pure greed”.

Pressed on who he would like to see fill the position, he said he “isn’t a big England fan”, adding: “Gotta be English man, I think – Gareth Southgate, why not.”

Director Mat Whitecross, the man also behind Road to Guantanamo, said he “grew up with the band” and was a “massive fan”, admitting it was “amazing” to work with the brothers.

“Given the fact they have fallen out and they didn’t want to speak to each other, actually from a filmmaking perspective it was probably better because it meant we could interview them separately,” he added.

Oasis’ Liam and Noel Gallagher (Fiona Hanson/PA)

Revealing it was “difficult” to get hold of some of the earlier footage, he also said it was “hard” obtaining film from their first year.

He added: “Luckily, for whatever reason, every time there was a particular incident, whether it was their visit to Japan or when they tried to break America and blew it all up because of drugs, for some reason someone just happened by chance to have recorded that night.”

The documentary is out on general release from October 7 in 380 cinemas across the UK and Ireland.