Liam Gallagher has accused his brother Noel of threatening legal action against him if he uses footage of Oasis in a forthcoming documentary, As It Was.

Liam tweeted: “Ive just been informed that I’ll be sued by the not so mighty little fella and his goons at [management company] Ignition if I use any footage of me singing oasis yes oasis songs in As It Was. Who’s bitter now eh”.

Noel Gallagher’s spokeswoman said the singer would not be making a comment on the accusation. Representatives for Liam Gallagher said that the legal threat was real, but that they would be making no further comment on it.

As It Was was announced in May 2018, and will be directed by Charlie Lightening, who has previously directed videos with Liam Gallagher and has documented Paul McCartney, Kasabian and others on tour. Liam has described it as “about my musical comeback – it covers the writing and recording of my first solo album, right through to playing it live for the very first time in my hometown of Manchester and around the world”.

Liam released his debut solo album As You Were in October 2017. It reached No 1 and was the ninth-biggest-selling album of that year in the UK.

Since the dissolution, in 2009, of Oasis – arguably the biggest British band of their generation – the pair have constantly warred with one another. While some of the friction has taken the form of amusing bickering and insults – Noel memorably describing Liam as “a man with a fork in a world of soup” – the feud took an uglier turn in March 2018, when Liam compared Noel and his wife Sara MacDonald to the serial killers Fred and Rosemary West in an extraordinary Twitter tirade, in which he accused MacDonald of breaking up the brothers’ band.

In July 2018, Liam urged Noel to reform Oasis with him, tweeting: “Let’s get the BIG O back together and stop fucking about the drinks are on me”.