Building No 99 (Main Workshops)

BUILDING NO 99 (MAIN WORKSHOPS), A 421 (SOUTH-EAST SIDE)

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Overview

Heritage Category:
Listed Building
Grade:
II
List Entry Number:
1393041
Date first listed:
01-Dec-2005
List Entry Name:
Building No 99 (Main Workshops)
Statutory Address:
BUILDING NO 99 (MAIN WORKSHOPS), A 421 (SOUTH-EAST SIDE)

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Official list entry

Heritage Category:
Listed Building
Grade:
II
List Entry Number:
1393041
Date first listed:
01-Dec-2005
List Entry Name:
Building No 99 (Main Workshops)
Statutory Address 1:
BUILDING NO 99 (MAIN WORKSHOPS), A 421 (SOUTH-EAST SIDE)

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.

Understanding list entries

Corrections and minor amendments

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.

Understanding list entries

Corrections and minor amendments

Location

Statutory Address:
BUILDING NO 99 (MAIN WORKSHOPS), A 421 (SOUTH-EAST SIDE)

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

County:
Oxfordshire
District:
Cherwell (District Authority)
Parish:
Launton
National Grid Reference:
SP 59215 24456

Details

LAUNTON

SP5924 A 421 (SOUTH-EAST SIDE) 1714/0/10054 RAF Bicester: Technical Site 01-DEC-05 Building No 99 (Main Workshops)

GV II Workshop for airframe and engine repairs, welders' bay and fabric-workers shop. 1926. By the Air Ministry's Directorate of Works and Buildings, to drawing number 1788/25. Stretcher bond brickwork, brick stack, asbestos-cement slate roof.

PLAN: A group of 3 linked gable single-storey sheds around a narrow central courtyard with in-filling flat-roofed elements, and enclosed at the outer end, containing various well-lit working areas.

EXTERIOR: All parts are generously fenestrated, with large steel casements set to flush concrete lintels and stooled sills; all three sheds have patent roof glazing to both slopes. The gable ends each have wide doorways, one of these a later roller version, and a pair of plank doors to the narrow courtyard entrance.

INTERIOR: Series of steel trusses on brick piers.

HISTORY: The Technical Site at Bicester, separated from the Domestic Site, still has many original buildings, mostly of 1926 but with others added during successive phases of the 1930s Expansion Period. This is a substantial and little altered complex, strategically placed between the two 'A' type hangars (qv), facing the main avenue bisecting the site, leading to the flying field. It also comprises one of the first permanent designs for Britain's independent air force, and through its key function as workshops for airframe and engine repairs comprises an integral part of a uniquely important site.

Bicester is the best-preserved of the bomber bases constructed as the principal arm of Sir Hugh Trenchard's expansion of the RAF from 1923, which was based on the philosophy of offensive deterrence. It retains, better than any other military airbase in Britain, the layout and fabric relating to both pre-1930s military aviation and the development of Britain's strategic bomber force - and the manner in which its expansion reflected domestic political pressures as well as events on the world stage - in the period up to 1939. It was this policy of offensive deterrence that essentially dominated British air power and the RAF's existence as an independent arm of the military in the inter-war period, and continued to determine its shape and direction in the Second World War and afterwards during the Cold War. The grass flying field still survives with its 1939 boundaries largely intact, bounded by a group of bomb stores built in 1938/9 and airfield defences built in the early stages of the Second World War. For much of the Second World War RAF Bicester functioned as an Operational Training Unit, training Canadians, Australians and New Zealanders as well as British air crews for service in Bomber Command. These OTUs, of which Bicester now forms the premier surviving example, fulfilled the critical requirement of enabling bomber crews - once individual members had trained in flying, bombing, gunnery and navigation - to form and train as units.
For further historical details see Buildings Nos 79 and 137 (Type 'A' Hangars).

Legacy

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

Legacy System number:
497529
Legacy System:
LBS

Sources

Books and journals
Francis, P, RAF Bicester, (1996)
Francis, P, British Military Airfield Architecture From Airships To The Jet Age, (1996)
Dobinson, C, Airfield Themes, (1997)

Legal

This building is listed under the Planning (Listed Buildings and Conservation Areas) Act 1990 as amended for its special architectural or historic interest.

Ordnance survey map of Building No 99 (Main Workshops)

Map

This map is for quick reference purposes only and may not be to scale. This copy shows the entry on 26-Jun-2026 at 20:17:45.

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© Crown copyright [and database rights] 2026. OS AC0000815036. Use of this mapping is subject to Terms and Conditions.

End of official list entry

All text content is available under the Open Government Licence v3.0 , except where otherwise stated. Any supplied maps are © Crown Copyright [and database rights] 2026 OS AC0000815036 and may not be reproduced without permission.

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