The BBC's assistant political editor was supposed to be updating viewers on Arlene Foster's visit to Downing Street, but he ended up telling them about a "much more interesting fight about to erupt".

Although the general election has left some politicians bruised, Norman Smith spoke about the battle brewing in a turf war between Larry and Palmerston, who both live in the street.

He returned to the "face-off" between the four-legged rivals later in his live interview with Daily Politics presenter Jo Coburn.