Seventy sandbags of "sacred soil" from the First World War battlefields of Flanders will be carried through the capital today on their way to a memorial garden which will mark next year's 100th anniversary of the start of the war.
The bags arrived in London yesterday and will be taken by gun carriage from HMS Belfast to Wellington Barracks, where the Flanders Field Memorial Garden is being created.
On the way the carriage will pass national landmarks such as St Paul's Cathedral and Buckingham Palace.
The bags were delivered by the Belgian Navy frigate Louise-Marie, which sailed through Tower Bridge, opened fully in recognition of the event.
Visit ITV London for more on this story.
More top news
Nearly one million people could have their homes repossessed because they do not have a plan to pay off their interest-only mortgages.
Social services officials think that Charlie Clift, five, and Kaiton Warnes, two, are in North Cyprus with their mother Amelia Warnes, 23.
Aylan Kurdi, three, and his brother Galip will be buried with their mother in Kobane, the city they tried so desperately to escape.