UK 'underestimating' war crime suspect numbers
21 March 2014 Last updated at 09:46 GMT
Official figures are "underestimating" the number of suspected war criminals living in the UK, former head of the UK Border Force Brian Moore has said.
He told told BBC Radio 4's Today programme it was necessary to "engage the public" in order to ascertain more reliable figures, along with a clear government strategy.
First broadcast on BBC Radio 4's Today programme on Friday 21 March.