He is one of a number of high profile Ulster Unionist moderates who have left the party along with Harry Hamilton and Paula Bradshaw, who both joined the Alliance Party of Northern Ireland, and Trevor Ringland, who joined the NI Conservatives.
In 2012, Trevor Ringland, who like Barr attended Larne Grammar School, called for more recognition for the impressive achievements of Dianne Barr.
On 24 February 2010 Ringland was adopted by the Ulster Unionist Party and Conservative Party as their joint candidate in East Belfast for the 2010 General Election.
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In September 2010, Ringland became involved in a controversy over the new leader of Ulster Unionist Party, Tom Elliott.
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