Prince Harry has turned his hand to being a newsreader during a visit to the Confetti Institute of Creative Technologies in Nottingham.
He is not the first royal to try presenting, his father the Prince of Wales tried weather presenting last year:
More top news
The incident is not believed to be terror-related, British Transport Police said.
The royal couple have been in the US to mark the 300th anniversary of the foundings of New Orleans and San Antonio.
A small number of people were treated at Southgate Tube station, British Transport Police said.