An investigation by ITV's Daybreak has looked at what a child would do if they were approached by a stranger.
The show recruited volunteer parents, whose children did not know they were being filmed, and a close protection officer, who played the part of a stranger.
Nine children were approached in a park by the 'stranger' and as Daybreak's Daisy McAndrew reports, a worryingly high number of them left with the man.
More top news
The Home Secretary said the Government is "against cliff edges" and immigration figures will not suddenly fall when the UK leaves the EU.
Peter Whittle has said it was probably too early for Paul Nuttall to run as an MP for the party after only just becoming its leader.
Three people are in a critical condition and two more were hurt after a car crashed into a wall and hit pedestrians in south London.