Quite easy to miss this on the i-player and perhaps some folk aren't aware that it exists. You have to go to 'Categories' and then select 'From The Archive' which brings up a long list of fascinating programmes, many not seen since their original tranmission. There are some going right back to the turn of the 1950s.
https://www.bbc.co.uk/iplayer/catego...=dateavailable
Great vintage viewing material BUT - the only annoyance is that 4:3 ratio programmes are shown in a frame (i.e. not full screen), presumably to make them viewable on modern 16:9 sets, so bang went my idea of watching shows through an Aurora on a suitable 405 line set. I don't think there's any way around that.
Steve