Two groups of marines set off from Downing Street this morning, on an epic fund raising speed march around the capital.
One team headed east to the Olympic Park, and the other set off west, past Buckingham Palace.
They were seen off by Prime Minister David Cameron and the Military Wives choir.
More top news
Police investigating the murder of a grandfather from West Ham have arrested a second man on suspicion of murder.
Police are appealing for information after a woman was killed and three people injured after a crash in east London.
A restaurant where pets and their owners can share a meal together has opened just in time for Valentine's Day.