Admiralty Citadel
A huge, protected Second World fortress right in the middle of Central London, sat in between Horse Guards Parade and Saint James's Park.
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Aldwych Station
Aldwych Stastion, originally know as Strand Station was closed in 1994. The disused street level entrance can still be seen on The Strand.
Ammo Case Valley
A Second World War ammo dump, the valley was originally the entrance to Browns Folly Mine which was collapsed by the War Department.
Bethel Quarry
A fairly small, single adit entrance Bath stone quarry, it's now used as a mushroom farm, it all spent some time as a Royal Naval storage depot.
Box Quarry
Box Quarry is an SSSI (Special Site of Scientific Interest) because of its national importance for hibernating and roosting bats. The bats must not be disturbed in any way.
Box Quarry is at the western end of the MOD's Tunnel Quarry site and is partly owned by the MOD but after some modification it was only used as an air inlet for the Tunnel Quarry complex.
Box Tunnel
A two mile long tunnel, built by Isambard Kingdom Brunel through Box Hill. Next to the eastern entrance of the tunnel you can see the remains of a branch from the main London to Bristol railway line which lead into the hillside into the Corsham Ammunitions Depot and terminated at a half-mile long underground railway station which was used during World War II.
Brean Down Fort
The fort was built between 1864 and 1871 on the recommendations of the 1859 Royal Commission. Originally armed with seven 7" RMLs, it was disarmed in 1901, but rearmed with two 6" ex-naval guns during World War II. Recently restored and opened to the public by the National Trust.
Brewers Yard Quarry
A very unique former Bath stone quarry, the quarry is small in size but has some interesting features. The quarry comprises of two levels which are connected by a stone staircase and a vertical shaft connecting both levels with the surface. There are many blocks of Ashlar which were stacked up but never moved to the surface.
Brocklease Quarry
Brocklease Quarry is also known as Goblins Pit, it is currently used by Wansdyke Security for secure storage and as a vehicle depot.
Browns Folly Mine
Browns Folly Mine is an average sized Bath Stone quarry which was originally part of Monkton Farleigh Mine however when the War Department converted part of the quarry in to an ammunitions store they separated part of the quarry which is the area now known as Browns Folly.
Burlington Bunker
The former emergency relocations site for the government in the event of nuclear attack, the site has been abandoned since the 1980s since which time it has been kept as a decoy site until it's declassification at the end of 2004. Burlington has had many code names since it's conception in the early 50s, these include Stockwell, Subterfuge, Turnstile and more recently Site 3.
Central Ammunitions Depot
CAD is spread over four seperate quarries in the Corsham area, Monkton Farleigh Quarry is in part used for secure holding by Wansdyke Security. Tunnel Quarry is still used by the MOD. Ridge Quarry has been abandonned. Eastlays Quarry is a commercial site used for wine storage.
Clifton Rocks Railway
A funicular railway constructed inside the cliffs of the Avon Gorge, it closed before WWII and became a secret transmission base for the BBC.
Colerne Airfield
A very large airfield which is still in use today as home to 21 Signal Regiment and as a communications site for the joint service's Skynet system.
Combe Down Tunnel
A mile long railway tunnel on the Bath extension line of the Somerset and Dorset Joint Railway, which ran between Midford and Bath Queen Square until 1966.
Command and Control Centre
One of the UK's best kept secrets, CCC is an active government bunker located at Peel Circus in Corsham, above ground the site consists of nothing more than a doorway in to a mound of earth, obscured from public view by a ring of trees and vegetation.
Down Street Station
Down Street is a London Underground station between Hyde Park Corner and Green Park on the Piccadilly line, it was closed in 1932 and later used as an air raid shelter.
