An RAF nuclear jet base is only protected by a 5ft-high fence, hedges and bushes, it has been discovered.
An investigation by The Telegraph uncovered the significant security flaws at the aircraft base.
The findings revealed that several of the RAF's most critical facilities face potential breaches by committed protesters and hostile state actors.
The vulnerable sites include a proposed location for Britain's F35 fighter aircraft.
The site is only protected by a small fence on the edge of a busy road
Google Maps
Through street view technology, security vulnerabilities can be readily identified, which defence analysts warn groups have likely already utilised to evaluate potential entry points.
It was discovered that numerous RAF installations remain exposed to potential infiltration, with certain areas defended merely by hedgerows, timber barriers or completely unprotected sections that defence sources acknowledged were "not perfect".
The RAF has seemingly taken minimal action to reinforce physical security at its installations.
Evidence of the security risks has been compiled into a report submitted to the Ministry of Defence (MoD), whilst withholding specific base names and precise vulnerability locations.
LATEST DEVELOPMENTS
The assessment of RAF installations revealed sparse security patrols, extensive sections lacking barbed wire, and surveillance cameras that failed to monitor complete perimeter boundaries.
Conservative Shadow Defence Minister Mark Francois said the RAF needed to review base security following the "serious revelations".
Francois said: "The MoD has announced a review of security at all military installations, which must be thorough but also conducted at pace.
"These serious revelations underline just how crucial that security review now is."
Another part of the base is only protected by hedges and bushes
Google Maps
Richard Tice, the deputy leader of Reform UK, said the RAF was guilty of a "clear failure of leadership".
He said: "Our bases need to be made fully secure."
In a statement, the MoD said: "We take security extremely seriously and operate a multi-layered approach to protect our sites, including fencing, patrols and CCTV monitoring.
"Following the security incident at RAF Brize Norton, we are urgently reviewing security procedures across the Defence estate and have immediately implemented a series of enhanced security measures at all sites.
"After years of hollowing out and underfunding of the Armed Forces, the Strategic Defence Review concluded that we need to invest more in this area, backed by the largest sustained increase in defence spending since the end of the Cold War."