Admission to the site is strictly via a Guardroom (fitted with bullet-proof glass) which has a vehicular gate with control barrier and electrically operated pedestrian gate.

On site security staff (ex-military and police) maintain a physical presence in the Guardroom and perform random patrols of the site with guard dogs. Patrols of secure areas are also conducted on a regular basis and there is constant CCTV monitoring. Sophisticated infrared cameras cover the site both above and below ground and include a ‘last motion picture captured’ facility with thumbnail archives.

Entry to the Nuclear Bunker is via a turnstile, operated by an encrypted security card system. All access below ground is physically monitored and recorded by security staff and by CCTV.