The present interior of the church dates from the mid 1950's when extensive renovations had to be carried out due to the discovery of dry rot. At the rear right-hand side of the building there is a memorial plaque to the very rev. Dr. Joseph Mitchell minister of the last general assembly before the union of the church of scotland and the united free church in 1929.

The present church was opened for public worship in August 1829. It stands on the site of St Michael's church which dates back to the thirteenth century and which was granted parochial status by the bishop of glasgow in 1315. St Michael's Parish church stood on land belonging to melrose abbey and in those days the parish comprised the present parishes of Mauchline Sorn and Muirkirk.