In retirement he was one of the several retired Chiefs of Defence Staff who spoke out in the House of Lords about the risk to servicemen facing liability for their actions - for which he claims politicians are ultimately responsible - before the International Criminal Court.[12]
In July 2004 he was appointed Lord Warden of the Cinque Ports,[13][14] to succeed the late Queen Elizabeth the Queen Mother. Lord Boyce was the first former Chief of the Naval Staff to hold this appointment.