The former Oasis frontman attended the concert at Earls Court on Saturday (13Oct12) with his wife Nicole Appleton and a group of friends, but left the arena with his Beady Eye bandmate Andy Bell after just a few songs.
Gallagher's swift exit hit headlines, but the former Wham! star took to his Twitter.com page to insist he wasn't offended by the walk out.
In a series of posts, Michael writes, "Please don't hold it against Liam that he popped off to the bar at Saturday's show... He's a lovely guy and has always been really friendly to me...
"And very complimentary about my music... And anyway he was getting a load hassle from people who spotted him so it's not surprising he went for for a bevvy (drink)..."