Martello tower no 5 at Folkestone School for Girls


Heritage Category:
Scheduled Monument
List Entry Number:
Date first listed:
Date of most recent amendment:


© Crown Copyright and database right 2021. All rights reserved. Ordnance Survey Licence number 100024900.
© British Crown and SeaZone Solutions Limited 2021. All rights reserved. Licence number 102006.006.
Use of this data is subject to Terms and Conditions.

The above map is for quick reference purposes only and may not be to scale. For a copy of the full scale map, please see the attached PDF - 1017172.pdf

The PDF will be generated from our live systems and may take a few minutes to download depending on how busy our servers are. We apologise for this delay.

This copy shows the entry on 22-Jan-2021 at 20:30:49.


The building or site itself may lie within the boundary of more than one authority.

Folkestone and Hythe (District Authority)
National Grid Reference:
TR 20774 35536

Reasons for Designation

Martello towers are gun towers constructed to defend the vulnerable south eastern coast of England against the threat of ship-borne invasion by Napoleonic forces. Built as a systematic chain of defence in two phases, between 1805-1810 along the coasts of East Sussex and Kent, and between 1808- 1812 along the coasts of Essex and Suffolk, the design of martello towers was based on a fortified tower at Mortella Point in Corsica which had put up a prolonged resistance to British forces in 1793. The towers take the form of compact, free-standing circular buildings on three levels built of rendered brick. The towers of the south coast were numbered 1-74 from east to west, while those of the east coast were identified by a system of letters (A-Z, and then AA-CC) from south to north. Although they exhibit a marked uniformity of design, minor variations are discernible between the southern and eastern groups and amongst individual towers, due mainly to the practice of entrusting their construction to local sub-contractors. Most southern towers are elliptical in plan, whilst the eastern group are oval or cam-shaped externally, with axes at the base ranging between 14.4m by 13.5m and 16.9m by 17.7m. All are circular internally, the battered (inwardly sloping) walls of varying thicknesses, but with the thickest section invariably facing the seaward side. Most stand to a height of around 10m. Many martello towers are surrounded by dry moats originally encircled by counterscarp banks, and/or have cunettes (narrower water defences) situated at the foot of the tower wall. The ground floor was used for storage, with accommodation for the garrison provided on the first floor, and the main gun platform on the roof. The southern towers carried a single 24 pounder cannon, whilst the eastern line carried three guns (usually a 24 pounder cannon and two shorter guns or howitzers). Three large, circular ten- gun towers known as redoubts were also constructed at particularly vulnerable points, at Dymchurch, Eastbourne and Harwich. All three survive. As the expected Napoleonic invasion attempt did not materialise, the defensive strength of the martello tower system was never tested, and the tower design was soon rendered obsolete by new developments in heavy artillery. Many were abandoned and fell into decay or were demolished during the 19th century, although some continued in use into the 20th century as signalling or coastguard stations and a few saw use as look out points or gun emplacements during the two World Wars. Of the original 74 towers on the south coast, 26 now survive, and of the 29 on the east coast, 17 now survive. Those which survive well and display a diversity of original components are considered to merit protection.

Martello tower no 5 survives well, and retains a substantial proportion of its original components and associated features, including much of the glacis bank. Features associated with the later 19th century refurbishment also remain in place, providing an important insight into the subsequent use and development of the tower. When viewed as one of a series of six cliff top towers, no 5 contributes to understanding the strategically planned integration of the martello tower system and its role in the defence of Britain during the 19th and early 20th centuries.


The monument includes a martello tower, set within a dry moat and outer glacis (sloping bank), situated immediately west of the Folkestone School for Girls in the south west part of Folkestone. It is one of a cliff top series of six moated towers, constructed in 1805-6 to defend the coastline between Hythe and Folkestone, and lies around 400m north west of tower no 4. The slightly elliptical, brick built tower measures up to 13m in diameter externally and stands complete to its original height of about 10m. The upper half of the tower protrudes above the lip of the stone built retaining wall of the moat, which encircles the base at a distance of around 10m and was intended to provide further protection from both cannon fire and ground assault. As part of the original design, soil was built up against the outer face of the moat wall to form a glacis, which slopes away from the lip of the moat for a distance of up to 20m. Construction of the modern school buildings, and associated access paths, to the north east of the tower, has partly levelled the glacis along its north eastern edge. The tower was constructed on three levels, with battered (inwardly sloping) walls, designed to deflect cannon shot, ranging from around 1.6m to 4m in thickness, the most substantial section being the wall base on the southern, seaward side. The external face of the tower was rendered in a cement mortar, or stucco, which served to strengthen the outer skin of bricks. A thick central column rises from the basement to the top of the tower, from which springs the barrel vaulted first floor ceiling which supports the gun platform on the roof. Access into the tower is by way of a first floor doorway, which was originally approached by a drawbridge across the moat, capable of being raised to seal the entrance. The bridge no longer survives, although the wheels of the drawbridge mechanism remain in place. The doorway is headed by a stone tablet displaying the number of the tower. The first floor was divided into three rooms by wooden partitions and provided accommodation for the garrison of 24 men and one officer. During later, 19th century refurbishments, two partitions were added, one on either side of the door, forming an entrance hall. Two fireplaces heated the rooms, which were lit by two splayed window openings to the east and west. The ground floor is reached by an opening through the suspended timber floor, which replaced the original trap door near the entrance. This was used to store ammunition and supplies, and provision for these includes an unusual arrangement of two magazine rooms created during later refurbishments. Safety features included lantern windows in the partition walls, separated from the magazine by panes of glass. Two slate water tanks were installed beneath the floor and ammunition lift shafts, linking the gun emplacement to the basement level, were inserted into the thickness of the wall at the time of the refurbishments. The open gun platform is reached from the first floor by an internal stone staircase constructed in the thickest part of the tower wall. The circular roof space, designed to accommodate a 24-pounder cannon mounted on a wooden traversing carriage, retains most of its original features, including the raised central pedestal which held the gun pivot, and the perimeter step which carried the outer gun rail, all of which was sealed in asphalt, and the parapet wall rendered, in 1964. The cannon, which had a range of around 1.5km and could be turned through 360 degrees, was operated by a series of rope pulleys with six iron hauling-rings set into the parapet wall which encircles the roof. The lift shaft openings and ammunition stores, in the form of arched recesses, are also set into the parapet wall. All modern fixtures and fittings, and all modern fences and ground surfaces are excluded from the scheduling, although the ground beneath these features or the structures to which they are attached are included.

MAP EXTRACT The site of the monument is shown on the attached map extract. It includes a 1 metre boundary around the archaeological features, considered to be essential for the monument's support and preservation.


The contents of this record have been generated from a legacy data system.

Legacy System number:
Legacy System:


Books and journals
Sutcliffe, S, Martello Towers, (1972)
Telling, RM, English Martello Towers: A Concise Guide, (1997)
Telling, R M, Handbook on Martello Towers, (1998)
The Conservation Practice, , South Coast Martello Towers - a report of survey, (1996)


This monument is scheduled under the Ancient Monuments and Archaeological Areas Act 1979 as amended as it appears to the Secretary of State to be of national importance. This entry is a copy, the original is held by the Department for Digital, Culture, Media and Sport.

End of official listing

Your Contributions

Do you know more about this entry?

The following information has been contributed by users volunteering for our Enriching The List project. For small corrections to the List Entry please see our Minor Amendments procedure.

The information and images below are the opinion of the contributor, are not part of the official entry and do not represent the official position of Historic England. We have not checked that the contributions below are factually accurate. Please see our terms and conditions. If you wish to report an issue with a contribution or have a question please email [email protected].