The remains of a Second World War rectractable Pickett-Hamilton fort exists c. 220m south of the Aerodrome Estate, Thurnham It originally formed part of the defences of Detling Airfield and is slightly visible on 2012 aerial photography. (1)

A 2024 survey described it as "Pickett Hamilton Retractable Fort. Former Detling Airfield site, in field between Kent Showground and Industrial Estate. Concrete construction, set into the ground with metal trap door. In good condition from what could be observed, however unable to open the hatch. " (2)

<1> 2012, 2012 collection of vertical aerial photographs of Kent (Photograph). SKE31544.

<2> Kent Defence Research Group, 2024/5, Site recording form for the Maidstone 20th Century Defences Project (Digital archive). SKE56292.