There are several interesting historical features that the Victorians left blessedly alone. Chief among these is the unique 14th-century lead font. This is a remarkable construction, with decoration in raised lettering. It is divided into panels and was probably donated by Andrew Peverell, a local knight in the mid-14th century.
The oldest part of the church is the vestry, built around 1400 and rebuilt as a chapel on the orders of Robert Palmer around 1545.
The interior is filled with lovely old 19th-century box pews, with a private family pew for the lords of Parham, complete with its own fireplace.
Spare a glance for the pulpit; though unremarkable in itself, it is decorated with small carved plaques made of wood brought from the Mount of Olives in Jerusalem by a soldier in the Sussex Yeomanry who served in Palestine during WWI.
Note: Don't confuse this Parham church with the one in Suffolk!