The Paedophile Information Exchange "weren't taken as seriously as they ought to have been" by MPs, Sir Peter Bottomley has said.

His comments come as the former leader of the pro-paedophile campaign group Steven Adrian Smith claimed he stored material at the Home Office.

Sir Peter also responded to claims that there may have been an organised political cover-up of child sex abuse in the 1980s, dismissing the idea as "imagination".

First broadcast on BBC Radio 4's Today programme on Monday 7 July.