 James Black.As the Associate Presbytery developed (and divisions emerged), the congregation – based on the Voluntary rather than Establishment principle – became associated with the Burghers, which in 1820 became the United Secession Church, which in turn became the United Presbyterian Church in 1847, which merged with the Free Church in 1900 to become the United Free Church of Scotland, which united with the Church of Scotland in 1929.The BBC radio series 'Sunday Half-Hour' was broadcast on 18 June 1950, conductor by Cedric Thorpe Davie (1913-1983), and 'Children's Hour' on 2 December 1952, conducted by then Minister the Rev.