The D-Day landings were one of the biggest turning points of WW2, as allied troops launched a major offensive against the Germans from the beaches of Normandy.

To ensure the invasion was a success, the British army installed an artificial harbour with huge floating road bridges, to rapidly offload cargo and soldiers.

Seventy years on, one section of the so-called "whale bridge" has been salvaged from France, restored and brought back to Britain.

Mike Cartwright reports.