[Chalky, Btd] Late 40's here. I always think of Z-Cars as being 60s, although it must have gone well into the 70's, but I more or less stopped watching TV about then, except for stuff I actually wanted to see.
[Chalky, Btd, Raak] Mid-thirties, so I'm very jealous of anyone who can remember watching Pat Troughton in Doctor Who on original transmission. Other childhood memories include Rentaghost, Ivor the Engine, Mary Mungo and Midge, Hector's House, Noggin the Nog, The Sweeney, Blake's Seven and Swap Shop. I am also proud/sad (delete as applicable) to be able to recite the preambles to Hong Kong Phooey and Camberwick Green, and the closing words to Bagpuss.