Please note that we are set to temporarily pause our iconic Underground Tours, from Sunday 29 December until April 2025, to install a brand new winding engine. The Museum will remain open with a brand-new Time Tunnel experience launching in January 2025.
The ADC 3 was a high-candle-power lamp made in Leeds by Hailwood and Ackroyd. Introduced in 1934, the shape and green colour of the ADC No.3 makes it quite distinct from other lamps.
