In February 2002, on BBC 1 and CBBC a spin-off show of Blue Peter called Blue Peter Unleashed was launched. Liz Barker, Simon Thomas, Matt Baker and Konnie Huq all about sports activities. Guests included Steven Gerrard for example and many other sporting legends.
There were 29 episodes in total  and included and were broadcast February until May at many times. Some episodes were later broadcast in 2004. You can watch small clips of the show here.
An earlier spin off was Blue Peter Flies the World and also Re:Peter.