A Brittany Ferries vessel was boarded earlier this month by specially-trained officers who dropped in from a helicopter as the boat approached France during a trip from Portsmouth.
Current agreements mean French officers can only board passenger vessels in their territory.
France’s marine patrol said the French and UK governments were in negotiations about patrolling full crossings while the UK’s Home Office said security plans were under ‘constant review’. The approach is part of increased security measures following the recent terror attacks on the continent.
