Islwyn
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| Islwyn | |
|---|---|
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| History | Page Module:Infobox/styles.css has no content. |
| Page Template:Nobold/styles.css has no content. • Created | 1 April 1974 |
| Page Template:Nobold/styles.css has no content. • Abolished | 31 March 1996 |
| Page Template:Nobold/styles.css has no content. • Succeeded by | Caerphilly County Borough |
| Status | Borough |
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| Page Template:Nobold/styles.css has no content. • HQ | Pontllanfraith |
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The Borough of Islwyn was one of five local government districts of Gwent from 1974 to 1996.[1]
History
The borough was formed in 1974 as a local government district of Gwent. It covered the whole area of three former districts and part of a fourth, which were all abolished at the same time:
- Abercarn Urban District
- Bedwellty Urban District - the Argoed, Blackwood, Cefn Fforest, and Pengam wards only (rest became New Tredegar community in Rhymney Valley)
- Mynyddislwyn Urban District
- Risca Urban District
All the constituent parts of Islwyn had previously been in the administrative county of Monmouthshire prior to the reforms. Gwent County Council provided county-level services to the new borough.[2][3]
The district was named after local poet William Thomas (1832–1878), who used the bardic name 'Islwyn'.[4] Islwyn (meaning "below the grove") was part of the name of the ancient parish of Mynyddislwyn which covered its area. This was shown in the borough's coat of arms which represented a mountain below a grove of oak trees.[5]
The borough was abolished in 1996, when its area became part of Caerphilly County Borough.[1]
Islwyn continued as a Westminster constituency until the 2024 general election,[6] and will continue as a Senedd constituency until the 2026 Senedd election.[7] The Westminster constituency's best-known MP was Neil Kinnock.
Political control
The first election to the council was held in 1973, initially operating as a shadow authority before coming into its powers on 1 April 1974. Political control of the council from 1974 until its abolition in 1996 was as follows:[8]
| Party in control | Years | |
|---|---|---|
| Script error: No such module "Party name with color". | 1974–1976 | |
| Script error: No such module "Party name with color". | 1976–1979 | |
| Script error: No such module "Party name with color". | 1979–1996 | |
Premises

The council built itself a new headquarters in 1977 at Pontllanfraith House on Blackwood Road in Pontllanfraith. The building subsequently served as offices for Caerphilly County Borough Council until 2015 and has since been demolished.[9][10]
References
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- ^ a b Page Module:Citation/CS1/styles.css has no content."Gwent Archives Islwyn Borough Council Records". www.archiveswales.org.uk. Retrieved 4 April 2016.
- ^ Page Module:Citation/CS1/styles.css has no content."Local Government Act 1972", legislation.gov.uk, The National Archives, 1972 c. 70, retrieved 6 October 2022
- ^ Page Module:Citation/CS1/styles.css has no content."The Districts in Wales (Names) Order 1973", legislation.gov.uk, The National Archives, SI 1973/34, retrieved 4 October 2022
- ^ Page Module:Citation/CS1/styles.css has no content.Brinley Evans (Arael) (5 May 1972). "A Borough for the Bard?". Gwent Gazette. p. 11.
- ^ Page Module:Citation/CS1/styles.css has no content."Wales 1974 to 1996 (obsolete)". Civic Heraldry of England and Wales. Retrieved 12 May 2025.
- ^ Page Module:Citation/CS1/styles.css has no content."The Parliamentary Constituencies Order 2023", legislation.gov.uk, The National Archives, 15 November 2023, SI 2023/1230, retrieved 21 October 2025
- ^ Template:Cite legislation Wales
- ^ Page Module:Citation/CS1/styles.css has no content."Compositions Calculator". The Elections Centre. University of Exeter. Retrieved 21 May 2025. (Put "Islwyn" in search box to see specific results.)
- ^ Page Module:Citation/CS1/styles.css has no content."Pontllanfraith House Site Development Brief". Caerphilly County Borough Council. 2016. Retrieved 12 October 2022.
- ^ Page Module:Citation/CS1/styles.css has no content."Caerphilly Council's Pontllanfraith House closure takes a step closer". Caerphilly Observer. 23 January 2015. Retrieved 12 October 2022.
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