Titanic memorial cruise sets sail

Relatives of some of those who died on the Titanic are on a voyage to the North Atlantic site where the liner sank, to mark 100 years since the disaster.

MS Balmoral has left Southampton docks, retracing the route of the ill-fated cruise liner's maiden voyage.

The ship is due to reach the wreck site next weekend for a memorial ceremony.

The BBC's Jon Kay is onboard.