Former Church of the Holy Trinity (Now Known As Old Trinity Church)

The Former Church of the Holy Trinity, now known as Old Trinity Church, is an Anglican church that was converted into offices in the late 20th century. It is located near the center of Marlow and is associated with a large churchyard. The church was built in 1852, designed by Sir George Gilbert Scott, and is in the Decorated Gothic style.

The building is constructed from knapped flint with freestone dressings and features a tiled roof. It has a west end bell turret with a lead base and a shingled spirelet, as well as a timber-framed porch. The original layout includes a chancel, nave, north aisle, a lean-to northeast chapel, a lean-to northeast vestry, and a southwest porch.

The exterior of the church is largely unaltered. The chancel is buttressed and has a four-light east window in the Decorated style. The north aisle features two-light Decorated style windows with carved dripstone terminals. Although the former north porch has likely been removed, a gable scar is visible on the wall, and the moulded inner doorway remains. The nave has two and three-light Decorated style windows. The large timber-framed southwest porch includes cusped bargeboards, trefoil-headed fenestration, and benches, along with a moulded inner doorway adorned with carved heads at the dripstone terminals. The southeast priest's door is set in a shallow lean-to porch flanked by buttresses and features a cusped arch. The attractive west end bell turret has trefoil-headed openings beneath the shingled spire, which has sprocketted eaves.

The interior has been only partially inspected, with the north aisle having an inserted ceiling and being converted to offices. According to information from the High Wycombe Planning Department, a mezzanine floor has been added. However, the open roof, stained glass, and painted and stencilled decoration have been preserved.

This church is an externally well-preserved example of Sir George Gilbert Scott's work, a prominent architect of the Victorian Gothic Revival, and it significantly contributes to the townscape of central Marlow.