I recognise the commentator's voice. Chap called Roland Smith, served at the end of WWII as a HO sparker, emigrated to Canada in 1952, where he picked up his accent, later California where he worked as an electronic technician on the Apollo project. Returned to UK with US Dept of Defense and worked at Fylingdales in North Yorkshire. Met and married a Scottish girl and settled back in UK. I used to work with his wife Margaret.
He produced a series of videos "Naval Video Time Capsules" of archive film from the Imperial War Museum, all WWII stuff in COLOUR which had never been published and was rotting away in the basement somewhere.
Unfortunately he died a couple of years ago before his series of videos was completed. I have a set of them - really good stuff.