The Sun reports that Gallagher, frontman for Beady Eye, recently made the comments.
He said of the 'Little Lion Man' singers: "Everyone looks like they've got f**king nits and eat lentil soup with their sleeves rolled up. They all look like they live on the heath. Maybe that's where they record."
Gallagher also spoke out against the band's style, saying that they have "no style" and "look like they shop at Oxfam".
The 'Four Letter Word' singer also ranted about the BRIT and ARIA Award winners' music, accusing them of having "far too many acoustic guitars" on their tracks.
Gallagher also reportedly spoke ill of boyband One Direction in an interview with Q magazine, saying that "their heads were up their arses" when he met them at the Olympics.