Name of a british band 2006-2008?

I'm trying to remember the name of this band/song that I used to like a lot, but I can't remember. I think it was british (could have been irish too idk) but it was I think 3 men and 2 women, middle aged, all of them were overweight from what I remember. Their song was really really brit pop, happy and easy listening sounding. I think I remember having seen them at V festival or one of those mive english concerts... It would make my day if someone knew what I'm talking about, thanks!