Sophie McDonnell

New girl band Precious are representing the UK in next Saturday's Eurovision Song Contest. This programme follows the five girls' rise to fame, from their first appearance on Top of the Pops to the point where they learnt that they will represent the country with Say It Again.

It's 30 years since CBBC started airing short links between shows. To celebrate, Hacker has brought together the finest presenters, past, present and even a new one, to reminisce and laugh at a few bloopers.