Defence Secretary Philip Hammond admitted Prince Harry was moved to a guarded location when the attack on Camp Bastion began.
He told BBC 2's Newsnight:
Clearly there are fall-back plans and I can't go into the detail of them - but once we knew on Friday night that the perimeter at Bastion had been breached he would have been moved to a secure position under effective guard.
Clearly if we had a VIP in theatre and frankly if I was there or, Jeremy, if you were there in Camp Bastion and there was a breach of the perimeter security, anybody who might, by nature of who they are, be a target, they would be put in a secure location.
He is serving there as an ordinary officer but clearly there are additional security arrangements in place that recognise that he could be a target himself specifically as a result of who he is.