From youtube:

The Zimmers will feature in a BBC TV documentary being aired in May 2007. Documentary-maker Tim Samuels has been all over Britain recruiting isolated and lonely old people - those who can’t leave their flats or who are stuck in rubbish care homes. The finale of the show is this group of lonely old people coming together to stick it back to the society that’s cast them aside - by forming a rock troupe and trying to storm into the pop charts.