Not only was there a massive trolley bus system, but there was a huge tram system including conduit tracks that didn't require overhead wires (something which manufacturers today tout as a new thing).
The same was true all over the country, with even provincial towns having large tram systems.
With the new Edinburgh tram line costing £1.2bn and replacing one of six or seven main routes that Edinburgh once had, and the £42bn HS2 line essentially being a rebuild of the European-spec, partly electrified Great Central Railway that was closed and lifted in the 1960s, I'd like to know what the economic value of all this infrastructure was in 2014 terms. I bet it is close to £1 trillion. The economic damage wrought back then was nothing short of treason IMHO.