Filtration Room

Secret Nuclear Bunker
Kelvedon Hall Lane
Kelvedon Hatch
Brentwood
Essex CM14 5TL

If using GPS please use

CM15 0LA

Access only via A128

Note: Sat Nav may drop short of the main entrance. Continue until you see brown signs on A128

Tel: 01277 364883

March 1st to October 31st

Weekdays:
10.00am to 4pm
Weekends & Bank Holidays:
10.00am to 5pm

November 1st to end of February

Thursday to Sunday:
10.00am to 4pm
(Usually open during school holidays)

The last entry is usually 1 hour before closing time.

Adults: £10

Children (5-16 Years): £8

Family (up to 2 Adults + 2 Children): £25

Group prices min 15:
Adult £9 pp
Child £7 pp

Please note: Sometimes being underground there is no WiFi signal for card payment. As payment is at the end we strongly recommend you bring some cash to save embarrassment.