Plot: Today Blue Peter cameras are at the Appeal Depot where parcels of the ‘Three B’s’ - Buttons, Badges and Buckles - are pouring in to reach the target of a guide dog puppy and a block of kennels for the new Puppy Walking Centre. If you haven’t sent your parcel yet, the address is: Blue Peter ‘Three B’s’ Appeal, Royal George Wharf, 88 Bankside, London Se1 Jg