Wikimedi'Òc

Electric signal frame, Blackfriars Junction, Southern Railway (CJ Allen, Steel Highway, 1928).jpg - Andy Dingley

Power-operated signal frame, Ealing Common, Metropolitan & District Railway (CJ Allen, Steel Highway, 1928).jpg - Andy Dingley

Electric frame signalbox at London Bridge, Southern Railway (CJ Allen, Steel Highway, 1928).jpg - Andy Dingley

Bow Junction Signal Box Cabin.jpg - File Upload Bot (Magnus Manske)

NeasdenControlPanel.jpg - Rodhullandemu

Underground Railway Women- Women at work on London's Tube Network, 1942 D9483.jpg - Fæ