The initial run of consecutive episodes from 1959-1965.

John Noakes joins.

Christopher Trace leaves.

Peter Purves joins.

Season 5 of Blue Peter premiered on 1968-09-23.

Season 6 of Blue Peter premiered on 1969-09-15.

Season 7 of Blue Peter premiered on 1969-09-15.

Leslie Judd joins.

Valerie Singleton leaves.

Season 10 of Blue Peter premiered on 1973-09-10.

Season 11 of Blue Peter premiered on 1974-09-09.

Season 12 of Blue Peter premiered on null.

Season 13 of Blue Peter premiered on null.

Season 14 of Blue Peter premiered on null.

Season 15 of Blue Peter premiered on null.

Season 16 of Blue Peter premiered on null.

Season 17 of Blue Peter premiered on null.

Season 18 of Blue Peter premiered on null.

Season 19 of Blue Peter premiered on null.

Season 20 of Blue Peter premiered on null.

Season 21 of Blue Peter premiered on null.

Season 22 of Blue Peter premiered on null.

Season 23 of Blue Peter premiered on null.

Season 24 of Blue Peter premiered on null.

Season 25 of Blue Peter premiered on null.

Season 26 of Blue Peter premiered on null.

Season 27 of Blue Peter premiered on null.

Season 28 of Blue Peter premiered on null.

Season 29 of Blue Peter premiered on null.

Season 30 of Blue Peter premiered on null.

Season 31 of Blue Peter premiered on null.

Season 32 of Blue Peter premiered on null.

Season 33 of Blue Peter premiered on null.

Season 34 of Blue Peter premiered on null.

Season 35 of Blue Peter premiered on 1991-09-09.

Season 36 of Blue Peter premiered on null.

Season 37 of Blue Peter premiered on null.

Season 38 of Blue Peter premiered on null.

Season 39 of Blue Peter premiered on null.

Season 40 of Blue Peter premiered on null.

Season 41 of Blue Peter premiered on null.

Season 42 of Blue Peter premiered on null.

Season 43 of Blue Peter premiered on null.

Season 44 of Blue Peter premiered on null.

Season 45 of Blue Peter premiered on null.

Season 46 of Blue Peter premiered on null.

Season 47 of Blue Peter premiered on null.

Season 48 of Blue Peter premiered on null.

Season 49 of Blue Peter premiered on null.

Season 50 of Blue Peter premiered on null.

Season 51 of Blue Peter premiered on null.

Season 52 of Blue Peter premiered on null.

Season 53 of Blue Peter premiered on null.

Season 54 of Blue Peter premiered on null.

Season 55 of Blue Peter premiered on null.

Season 56 of Blue Peter premiered on null.

Season 57 of Blue Peter premiered on null.

Season 58 of Blue Peter premiered on null.

Season 59 of Blue Peter premiered on null.

Season 60 of Blue Peter premiered on 2018-01-04.

Season 61 of Blue Peter premiered on null.

Season 62 of Blue Peter premiered on null.

Season 63 of Blue Peter premiered on null.

Season 64 of Blue Peter premiered on null.

Season 65 of Blue Peter premiered on null.

Season 66 of Blue Peter premiered on null.

Season 67 of Blue Peter premiered on null.

Season 68 of Blue Peter premiered on 2025-09-05.