Rare photographs of North Mymms pillbox

Wartime archaeology on private land


Photograph of A type 24 pillbox in the fields of Boltons Park Farm owned by the Royal Veterinary College Image by the North Mymms History Project released under Creative Commons BY-NC-SA 4.0
A type 24 pillbox in the fields of Boltons Park Farm owned by the RVC
Image by the North Mymms History Project released under Creative Commons

Standing in the corner of a field south of Hawkshead Road, Little Heath, with good views to the north, south, east, and west, is the only pillbox in North Mymms.

It's a type 24 box, and was part of the local WWII defences set up to protect London from invasion.

To the north and east of the pillbox is a dip in the land, formerly the trench that was part of the outer London anti-tank defence line.

Photograph of The collapsed entrance to the type 24 pillbox in the fields of Boltons Park Farm Image by the North Mymms History Project released under Creative Commons BY-NC-SA 4.0
The collapsed entrance to the type 24 pillbox in the fields of Boltons Park Farm
Image by the North Mymms History Project released under Creative Commons
The pillbox is on land owned by Boltons Park Farm, part of the RVC (Royal Veterinary College), and is not accessible to the public (grid reference TL 25416 02701).

The North Mymms History Project was given permission by the RVC to visit the site in order to create a photographic record of the structure for those researching wartime archaeology online.

The remains of the Outer London Defence Ring, also known as the outer London stop line is visible in the image below running along the line of oaks behind the type 24 pillbox.

What is thought to be the remains of the anti-tank ditch running along the oaks  Image by the North Mymms History Project released under Creative Commons BY-NC-SA 4.0
The remains of the anti-tank ditch running along the oaks
Image by the North Mymms History Project released under Creative Commons


Photograph of The north face of the type 24 pillbox in the fields of Boltons Park Farm  Image by the North Mymms History Project released under Creative Commons BY-NC-SA 4.0
The north face of the type 24 pillbox in the fields of Boltons Park Farm
Image by the North Mymms History Project released under Creative Commons
Photograph of The interior of the type 24 pillbox in the fields of Boltons Park Farm  Image by the North Mymms History Project released under Creative Commons BY-NC-SA 4.0
The interior of the type 24 pillbox in the fields of Boltons Park Farm
Image by the North Mymms History Project released under Creative Common


The Swanley Bar tank traps


To the north-east of the pillbox, covered in ivy and hidden at the side of the road at the junction of Swanley Bar Lane and the Great North Road, grid reference TL 26144 03171, are two tank traps, part of the same defence line.

Photogaph One of the Swanley Bar tank traps North Mymms  Image by the North Mymms History Project released under Creative Commons BY-NC-SA 4.0
One of the Swanley Bar tank traps North Mymms
Image by the North Mymms History Project released under Creative Commons

One of the Swanley Bar tank traps North Mymms  Image by the North Mymms History Project released under Creative Commons BY-NC-SA 4.0
One of the Swanley Bar tank traps North Mymms
Image by the North Mymms History Project released under Creative Commons

Nearby pillboxes


The North Mymms pillbox is the most southerly wartime defence in the parish. To the south-west are two more type 24 pillboxes on Potters Bar golf course.

The first is 1,678 ft (511 m) to the north of the public footpath (Hertfordshire right-of-way Potters Bar 005) that runs across the golf course (grid reference TL 24863 02396). See the first two images below.

The second is another 1,796 ft (547 m) further west, close to the stream running alongside the footpath to the east of the railway line (grid reference TL 24485 02345). See the third and fourth image below.

The pillbox on Potters Bar golf course, grid reference TL 24863 02396 Image by the North Mymms History Project released under Creative Commons
The pillbox on Potters Bar golf course, grid reference TL 24863 02396
Image by the North Mymms History Project released under Creative Commons

The pillbox on Potters Bar golf course, grid reference TL 24863 02396 Image by the North Mymms History Project released under Creative Commons
The pillbox on Potters Bar golf course, grid reference TL 24863 02396
Image by the North Mymms History Project released under Creative Commons

The pillbox close to the railway line on Potters Bar golf course, grid reference TL 24485 02345 Image by the North Mymms History Project released under Creative Commons
The pillbox close to the railway line, grid reference TL 24485 02345
Image by the North Mymms History Project released under Creative Commons

The pillbox close to the railway line on Potters Bar golf course, grid reference TL 24485 02345 Image by the North Mymms History Project released under Creative Commons
The pillbox close to the railway line, grid reference TL 24485 02345
Image by the North Mymms History Project released under Creative Commons

You can read more about local wartime defences on the North Mymms History project, including articles about:





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