Media playback is unsupported on your device

G4S worker's concern over Olympic security measures

18 July 2012 Last updated at 13:14 BST

A whistleblower at G4S told BBC Radio 5 liveBreakfast's Nicky Campbell he has serious security concerns about the Olympic site he is working at.

The man, whose words have been voiced by an actor because he wants to keep his identity secret, said a guard failed to spot an x-ray image of a nail bomb.

The company insists training for every role is rigorous.

To listen to other Radio 5 live interviews, please visit the Best Bits page.

BBC © 2014 The BBC is not responsible for the content of external sites. Read more.

This page is best viewed in an up-to-date web browser with style sheets (CSS) enabled. While you will be able to view the content of this page in your current browser, you will not be able to get the full visual experience. Please consider upgrading your browser software or enabling style sheets (CSS) if you are able to do so.