London's Olympic Ambassadors are back on the streets in a pilot project at St Pancras Station.
The volunteer force will offer advice to visitors on how to get to attractions, restaurants and shopping areas.
But, as Rags Martel reports, they started with something a bit more dramatic.
More top news
In one bizarre monologue played in court, Khalid Masood’s raised voice is heard to say: “I never hear you say there’s any good in Isis",
Andrew Walton told the inquiry the stay-put policy was based on the building’s structure, meaning it was not designed to enable evacuations.
Early indications suggest the leak of the cleaning agent at the Milestone Hotel in west London was accidental