A SERVICE of commemoration is to be held in Liverpool today to mark the 70th anniversary of the Battle of the Atlantic.

It marks the focal point of a series of events held to mark the longest continuous military campaign of the Second World War.

Three Royal Navy warships arrived in London on Wednesday to play their part in nationwide acts of remembrance.

Organisers have planned fly-pasts, memorial services and parades in Derry, London and Liverpool to honour those who lost their lives.

Up to 25 ships from the Royal Navy and around the world are expected to arrive in Liverpool today, the destination of many wartime Atlantic convoys, ahead of a service of commemoration at the city's Anglican Cathedral.

The Battle of the Atlantic was fought for control of vital supply routes, beginning as war broke out in 1939.

German submarines were the Allies' principal threat at sea.

Winston Churchill once wrote: "The only thing that really frightened me during the war was the U-boat peril."