BBC News Defence Correspondent Caroline Wyatt says that amphibious forces have played a major role in British military operations for centuries. Now there are fears the Royal Navy could lose much of that capability, as the National Security Council meets to review the country's defence strategy.

Wyatt visited assault ship HMS Albion returning from an exercise in Scotland with young Royal Marine commandos aboard. She also interviewed the Commandant General of the Royal Marines and Commander Amphibious Forces, Maj Gen Buster Howes, as 40 Commando RM returned to the UK from Afghanistan on Wednesday.