The issue focused on many faces as fans queued for tickets for the Battle of Britain Memorial Service at St Paul's Cathedral.Armed forces veterans from different nations spoke at the service in memory of those who died in the conflict.Commander Sir Nick Carter, head of the Royal Navy, led the service and paid tribute to those who died in the conflict.At the scene - Nick Thorpe, BBC NewsThe atmosphere at the Battle of Britain Memorial Service was largely cordial. Some veterans turned up with families and