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Heath was originally called the Great Heath and named as a result of the large park and woodland that it once contained. After the initial development of traditionally middle-classed semi-detached housing (1920s-1950s) and more recently the construction of the University Hospital of Wales on the site of the former Heath Wood (1960s), much of the greenery has been eradicated. Heath Park forms the remainder of this grass and woodland and is very popular, having attractions such as a miniature steam railway and sports facilities. It should be distinguished from the Little Heath (Welsh: Y Waun Ddyfal) which lies to the south of the Great Heath, in the vicinity of Crwys Road. Birchgrove is a busy shopping area that is part of the ward of Heath. It is composed mostly of more affordably priced housing, mainly terraced, and has taken on an identity of its own.
The area around the University Hospital of Wales has been known as Saints Corner, due to the number of streets in the area named after well known saints.
The Welsh language
The number of Heath residents over three years old who speak Welsh increased from 1,378 in the 2001 UK Census to 1,422 in the 2011 UK Census. In percentage terms there was a slight decrease (from 12.1% to 11.7%). This was caused by a reduction in the number of speakers over the age of 65; the age groups 3–15 and 16—64 both showed increases.
The area is served by two railway stations. Heath Low Level is on the Coryton Line, linking Central and Coryton stations. Heath High Level is on the Rhymney Line, linking Central and Rhymney stations via Llanishen, Lisvane Thornhill and Caerphilly.
Cardiff Bus's routes 38 and 39 terminate at the University Hospital of Wales, originating from the City Centre. The 8 now operates between the City Centre and Grangetown, while the 9/9A operates from the City Centre to IKEA and Cardiff Bay, including the Sports Village.The 86 service runs to Lisvane via Heath. The following services run through west of Heath:
- 1/2 (City Circle)
- 21 (Central Stn)
- 23 (Whitchurch/Rhiwbina)
- 24 (Whitchurch/Llandaff/Canton)
- 25 (Central Stn)
- 27 Capital City Green (Thornhill/Birchgrove)
- 35 (Gabalfa or Cardiff Bay)
The electoral ward of Heath falls within the parliamentary constituency of Cardiff North. It is bounded by Rhiwbina and Llanishen to the north; Cyncoed to the east; Gabalfa and Cathays to the south; Llandaff North to the southwest; and Whitchurch & Tongwynlais to the west.
- Cardiff Council: Since May 2017 Heath is represented on Cardiff Council by three councillors, Lyn Hudson (Conservative), Graham Hinchey (Welsh Labour) and Fenella Bowden (Heath & Birchgrove Independents). Cllr Bowden had been a member of the Liberal Democrats but left, to sit as an Independent councillor, in November 2010. In the past it has been represented by a variety of political groups, moving from Labour in the 1990s, to all Liberal Democrat in May 2004 and, after the May 2008 election, a Conservative majority.
- Welsh Assembly: As part of Cardiff North, Heath has been represented in the Welsh Assembly since 2011 by Julie Morgan, AM (Labour)
- Westminster: As part of Cardiff North, Heath has been represented at Westminster since 2017 by Anna McMorrin MP (Welsh Labour)
- "Ward population 2011". Retrieved 8 April 2015.
- 'Welsh Language Commissioner: 2011 Census results by Community Archived 2013-10-22 at the Wayback Machine..
- "Election results for Heath - Cardiff Council Elections 2017 - Thursday, 4th May, 2017". Cardiff Council. Retrieved 21 March 2018.
- "Heath councillor leaves Lib Dem group". theguardian.com. 18 November 2010. Retrieved 20 April 2018.
- "Cardiff Council Election Results 1995-2012" (PDF). The Elections Centre. Retrieved 21 March 2018.