The Secret Life of 4, 5 and 6 Year Olds

4 Year Olds (2019): Episode 2 (6x2)

Air date: Jan 17, 2019

The fly-on-the-playroom wall documentary focuses on relationships, revealing how the four-year-olds form friendships, rivalries and romances with each other. Arthur and Iris decide to be boyfriend and girlfriend - only for Frankie to also show an interest in Iris. Best friends Na'Shae and Penny fall out over a hair bobble, and a five-metre climbing wall arrives at the nursery. Is anyone brave enough to make it all the way to the top?