Sorry to keep banging on about this channel, but they do keep uploading excellent archive clips which will be of interest to the likes of us.
First a lovely piece from a 1972 edition of Nationwide with Michael Barratt chatting to John Snagge about early types of BBC microphone (can you imagine anything like this being broadcast today?)
https://www.youtube.com/watch?v=HtmU_3PIx3M&t=69s
Also a 1958 extract from Panorama with Richard Dimbleby introducing the experimental VERA video tape recorder. This has been shown many times before, but I have never seen this much longer version:
https://www.youtube.com/watch?v=56V3QPpyOO8
Good stuff!
Steve