Former Air Raid Precautions Building
FORMER AIR RAID PRECAUTIONS BUILDING, WINDMILL HALL
Listed on the National Heritage List for England. Search over 400,000 listed places
Overview
- Heritage Category:
- Listed Building
- Grade:
- II
- List Entry Number:
- 1380172
- Date first listed:
- 24-Mar-2000
- List Entry Name:
- Former Air Raid Precautions Building
- Statutory Address:
- FORMER AIR RAID PRECAUTIONS BUILDING, WINDMILL HALL
Location
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Images of England Project
- Date:
- 2007-09-16
- Reference:
- IOE01/16790/06
- Rights:
- © Mr Steve Kirkland. Source: Historic England Archive
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Discover moreOfficial list entry
- Heritage Category:
- Listed Building
- Grade:
- II
- List Entry Number:
- 1380172
- Date first listed:
- 24-Mar-2000
- Date of most recent amendment:
- 03-Feb-2004
- List Entry Name:
- Former Air Raid Precautions Building
- Statutory Address 1:
- FORMER AIR RAID PRECAUTIONS BUILDING, WINDMILL HALL
The scope of legal protection for listed buildings
This List entry helps identify the building designated at this address for its special architectural or historic interest.
Unless the List entry states otherwise, it includes both the structure itself and any object or structure fixed to it (whether inside or outside) as well as any object or structure within the curtilage of the building.
For these purposes, to be included within the curtilage of the building, the object or structure must have formed part of the land since before 1st July 1948.
The scope of legal protection for listed buildings
This List entry helps identify the building designated at this address for its special architectural or historic interest.
Unless the List entry states otherwise, it includes both the structure itself and any object or structure fixed to it (whether inside or outside) as well as any object or structure within the curtilage of the building.
For these purposes, to be included within the curtilage of the building, the object or structure must have formed part of the land since before 1st July 1948.
Location
- Statutory Address:
- FORMER AIR RAID PRECAUTIONS BUILDING, WINDMILL HALL
The building or site itself may lie within the boundary of more than one authority.
- County:
- Greater London Authority
- District:
- Hillingdon (London Borough)
- Parish:
- Non Civil Parish
- National Grid Reference:
- TQ 09984 87248
Details
TQ 0087 Ruislip
804/12/10057
Former Air Raid Precautions
Building, Windmill Hall
- II
Gas de-contamination centre, later church hall. Built in 1941 by Ruislip and Northwood UDC to counter the expected gas warfare on civilians. The style is derived from Dudok. Built of reinforced concrete clad in wirecut bricks in English bond with metal-framed casements and flat roof. L-shaped on plan. Mainly one storey but two storey tower to west. North front has 4 narrow single metal-framed casements and triple casement to right with projecting brick stringcourse underneath. Brickwork around the windows shows signs of fixing for external shutters. Flush door with rectangular fanlight with frosted glass and later low disabled access ramp. Projecting two storey west tower ( boiler room and water tank ) has tall window on north face with flat semi-circular shaped concrete lintel above. East side has two casements at the top and west side has one window at the top. Corner chimney projects and has three recessed channels. Separate access to tower on south side. East and west sides have 5 triple metal casements and brick projecting stringcourse below windows. South end has two separate entrances.
INTERIOR: North part has toilets on either side of door, small room on east side, larger room to west with triangular shelf and double wall opposite probably acting as an airlock with two cupboards with shelves for clothing. There is a long room with three concrete roof girders which leads into two separately accessed rooms at the south end each with outside access. The long room probably had partitions originally. Wooden parquet floor probably added later. Layout of the gas de-contamination centre would have included an undressing area, eye douche and showers, drying rooms and dressing rooms.
["Twentieth Century Defences in Britain" CBA p75 explains a typical arrangement. ]
Legacy
The contents of this record have been generated from a legacy data system.
- Legacy System number:
- 479734
- Legacy System:
- LBS
Sources
Books and journals
Twentieth Century defences in Britain, (1995), 75
Legal
This building is listed under the Planning (Listed Buildings and Conservation Areas) Act 1990 as amended for its special architectural or historic interest.
Map
This map is for quick reference purposes only and may not be to scale. This copy shows the entry on 13-Jul-2026 at 15:34:23.
Download a full scale map (PDF)End of official list entry
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