18/06/1984 - BBC1 - Blue Peter (Double) 

A special edition of Blue Peter from 1984 which was billed as Blue Peter Double, a normal edition followed later on that afternoon hence the 'double' aspect.
Anyway, this first part focussed on Peter Duncan's initial four year tenure, which was now coming to a close and features plenty of highlights from his time on Blue Peter. Episode presented by Peter Duncan, Simon Groom and Janet Ellis.
Sourced from Betamax.