[1] Located on Dartford High Street next to the River Darent, the oldest part of the church was constructed in approximately 1080 by Gundulf, Bishop of Rochester, on the site of an earlier Saxon building, and was mentioned in the Domesday Book as containing three chapels.

When that chapel's altar was removed during the English Reformation and the flow of pilgrims dried up, the church ceased to provide a focus for the town's religious and ceremonial life, and many traders lost a valuable source of income.

[4][6] The original Norman tower (currently containing eight bells)[6][7] was added onto in the 14th century, and part of the church was removed during alterations by Robert Mylne in 1792 in order to widen the High Street.

[8] A small portion of the original churchyard survives east of the church, a parish hall having been constructed on the northern part in 1971.

[2] Rooted in the liberal Anglo-Catholic tradition of the Church of England,[9] Holy Trinity offers weekly services sung by a choir.