Alderford Mill 2026
Essex
Explore the Southeast of England's biggest and deepest Cold War bunker and witness its three lives, starting with its role as an RAF ROTOR (defence radar system) Station, then a brief period as a civil defence centre through to its most recent life as a Regional Government HQ. Designed for up to 600 military and civilian personnel, possibly even the Prime Minister, their collective task being to organise the survival of the population in the awful aftermath of a nuclear war.
Address: Kelvedon Hall Lane Kelvedon Hatch Brentwood Essex CM15 0LA
Mar-Oct Mon-Fri 1000-1600, Sat-Sun & BHol closes 1700. Nov-Feb Thu-Sun closes 1600, also school hols. Visit website or facebook for more details.
Hidden in the woods is a small unimposing bungalow with a big secret: beneath its ramshackle floors lies a three-floored bunker complex where people would have been confined behind blast-proof doors in the event of a nuclear attack.