View source for Llandaff

===Welsh language===
In the [[United Kingdom Census 2011|2011 census]], 15.3% of the population over 3 years old in Llandaff were recorded as speaking Welsh, or 1,337 people.  This was a small drop compared to the [[United Kingdom Census 2001|2001 census]] figure, which was 15.4%.<ref>{{Cite web |url=http://www.comisiynyddygymraeg.org/English/Assistance/Dataandstatisitcs/Pages/2011CensusresultsbyCommunity.aspx |title=Welsh Language Commissioner: 2011 Census: results by community |access-date=24 January 2015 |archive-url=https://web.archive.org/web/20131022002038/http://www.comisiynyddygymraeg.org/English/Assistance/Dataandstatisitcs/Pages/2011CensusresultsbyCommunity.aspx |archive-date=22 October 2013}}</ref><ref>{{cite web |title=Area: Llandaff (Ward); Welsh Language Skills, 2011 (QS206WA) |url=http://neighbourhood.statistics.gov.uk/dissemination/LeadTableView.do?a=7&b=13696960&c=Llandaff&d=14&e=61&g=6497671&i=1001x1003x1032x1004&o=362&m=0&r=1&s=1449188052561&enc=1&dsFamilyId=2499 |publisher=[[Office for National Statistics]] |access-date=3 December 2015 }}</ref>

[[Broadcasting House, Cardiff|Broadcasting House]] in Llandaff was the headquarters of [[BBC Cymru Wales]] until [[BBC Cymru Wales New Broadcasting House|it relocated to Central Square]] in Cardiff between October 2019 and July 2020.

Research by [[Owen John Thomas]] shows the historical strength of the Welsh language in Llandaff.  According to his book {{lang|cy|Yr Iaith Gymraeg yng Nghaerdydd c.&nbsp;1800–1914}} (''The Welsh language in Cardiff {{Circa|1800–1914}}''), the nonconformist church in Cardiff Road was a Welsh-language church in 1813.  His work also shows that Welsh was the main language of the street in Llandaff in the 17th century.{{Citation needed|date=February 2015}}