I haven't seen this documentary but I'll definitely take time out to watch it. Thanks for the heads-up.
I did spend a lot of business time with London Underground and did huge amounts of business with them and also with the suppliers of the trains.
Anyway the point is that I also did a lot of work with Royal Mail underground systems.
Not many people realise that Royal Mail operated a very significant underground system beneath London.
I met a lot of fascinating and interesting people at high levels of 'consulatncy jobs' I could never fathom, who seemed to circulate within London Underground and with Royal Mail Underground.
I wonder whether anyone here knows anything about the secret tunnels and underground systems beneath London that are available for Government and Royalty? (allegedly)
Any mention of this stuff in that programme?