I searched long and hard for footage from the Frog & Firkin in London near King's Cross but did'neh find any. The Frog & Firkin and other Firkin pubs were a favorite of mine while I was working at CINCUSNAVEUR, beers and ales made in house and pumped by hand from the basement brewery to the first floor pubs on demand!
Since I couldn't secure the desired footage you'll have to settle for the following other thing:
I can explain it to you but I can't understand it for you.
"Any man who thinks he can be happy and prosperous by letting the Government take care of him; better take a closer look at the American Indian." - Henry Ford
Corruptissima re publica plurimae leges; When the Republic is at its most corrupt the laws are most numerous. - Publius Cornelius Tacitus