K6 Telephone Kiosk outside the entrance of the former mustard seed drying shed

Carrow Works, Norwich, NR1 1JB

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Overview

K6 telephone kiosk, designed in 1935 by Sir Giles Gilbert Scott.
Heritage Category:
Listed Building
Grade:
II
List Entry Number:
1478657
Date first listed:
21-Dec-2021
List Entry Name:
K6 Telephone Kiosk outside the entrance of the former mustard seed drying shed
Statutory Address:
Carrow Works, Norwich, NR1 1JB

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Official list entry

Heritage Category:
Listed Building
Grade:
II
List Entry Number:
1478657
Date first listed:
21-Dec-2021
List Entry Name:
K6 Telephone Kiosk outside the entrance of the former mustard seed drying shed
Statutory Address 1:
Carrow Works, Norwich, NR1 1JB

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:
Carrow Works, Norwich, NR1 1JB

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

County:
Norfolk
District:
Norwich (District Authority)
Parish:
Non Civil Parish
National Grid Reference:
TG2437607512

Summary

K6 telephone kiosk, designed in 1935 by Sir Giles Gilbert Scott.

Reasons for Designation

The K6 Telephone Kiosk at Carrow Works is listed at Grade II for the following principal reasons:

Architectural interest:

* as an iconic example of industrial design, showing Sir Giles Gilbert Scott's adaption of neoclassical forms for a modern technological function.

Historic interest:

* the K6 telephone kiosk was designed to celebrate the Silver Jubilee of King George V in 1935 by the eminent architect Sir Giles Gilbert Scott, further developing his successful K2 telephone kiosk design of 1924;
* it is an important surviving element of the social history of the historic Colman’s manufacturing complex at Carrow, providing an important communications facility for factory workers.

Group value:

* for the strong contextual relationship, the kiosk holds with the adjacent former mustard seed drying shed (Grade II), as well as nearby listed and unlisted former factory buildings;
* for the contribution it makes to the historic Colman’s industrial complex at Carrow, which also includes Carrow House, Blocks 7, 7A, 8 and 8A, Block 60, and Block 92, all listed at Grade II and built in the mid- to late C19 within the setting of the scheduled remains of Carrow Priory and Grade I-listed Carrow Abbey.

History

The K6 telephone kiosk is a milestone of C20 industrial design. It was designed by Sir Giles Gilbert Scott in 1935 for the General Post Office, on the occasion of King George V's Silver Jubilee and was a development from his earlier highly successful K2 telephone kiosk design of 1924, of neoclassical inspiration. The K6 was more streamlined aesthetically, more compact and more cost-effective to mass produce.

Sir Giles Gilbert Scott (1880-1960) was one of the most important modern British architects; his many celebrated commissions include the Anglican Cathedral of Liverpool (Grade I) and Battersea Power Station (Grade II*). The K2 and K6 telephone kiosks can be said to represent a very thoughtful adaptation of architectural tradition to contemporary technological requirements. Well over 70,000 K6s were eventually produced. In the 1960s many were replaced with far plainer kiosk types but remaining examples of the K6 continue to be an iconic feature on Britain's streetscapes.

The telephone kiosk is thought to have been installed in the 1940s outside the mustard seed drying sheds at the former Colman’s mustard manufacturing site. The first buildings of the Colman’s mustard factory were constructed at Carrow between 1856 and 1862, and the site was greatly expanded in the late C19. A pair of parallel mustard seed drying sheds were constructed in 1890, and linked by a warehouse around 1920. Following the air raids and destruction of the Second World War, Colman’s instigated a major reorganisation of the Carrow Works site in the 1950s. In the 1990s, both the eastern drying shed and warehouse were demolished to make space for the storage of mint fermentation bins. In 1995 sections of Colman’s were purchased by Unilever and Robinsons, and manufacture at the Carrow site ceased in 2019.

Details

K6 telephone kiosk, designed in 1935 by Sir Giles Gilbert Scott.

MATERIALS: cast-iron frame and timber door.

PLAN: square on plan.

DESCRIPTION: the K6 is a standardised design made of cast-iron, painted red overall with long horizontal glazing in the door and sides. There are rectangular white display signs reading ‘TELEPHONE’ and applied crowns beneath the shallow-curved roof. The timber door retains its original hinge and the door handle has been replaced. The telephone equipment was removed in the early C21. The telephone kiosk stands immediately outside the entrance of the former mustard seed drying shed (Grade II), constructed in 1890.

Sources

Websites
Telephones UK, 'Kiosks and Payphones', accessed 14 October 2021 from https://telephonesuk.org.uk/kiosks-payphones/
The Telephone Box, ‘Kiosk No6 - K6’, accessed 14 October 2021 from http://www.the-telephone-box.co.uk/kiosks/k6/

Other
Unilever, ‘The History of Coleman’s: An educational guide for 11 to 16 year olds’, (1998)
Cotswold Archaeology, ‘East Norwich Development Norwich – Built Heritage Appraisal’, July 2021
Iceni Heritage, ‘Carrow Works Norwich – Designation Assessment’, September 2021

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 K6 Telephone Kiosk outside the entrance of the former mustard seed drying shed

Map

This map is for quick reference purposes only and may not be to scale. This copy shows the entry on 18-Jun-2026 at 15:16:00.

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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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