There is an interesting snippet on Raleigh Bikes on this episode of the Antiques Road Show
https://www.bbc.co.uk/iplayer/episode/m001bv0r/antiques-roadshow-series-45-1-wollaton-hall-1
Just after 13mins in and lasts for 5 minutes.
https://www.bbc.co.uk/iplayer/episode/m001bv0r/antiques-roadshow-series-45-1-wollaton-hall-1
Just after 13mins in and lasts for 5 minutes.