File:Burnham Thorpe, All Saints' church (29152600325).jpg

The church consists of a west tower, four-bay nave and aisles, chancel, and a north porch. The three stage tower was originally built in the early 15th century, but partly fell in the early 19th century and was probably reduced in height at that time. There is a battlemented parapet with crocketted pinnacles and gargoyles. It is decorated with Shields and panels of black flints.

The nave has 13th century north and south arcades of four bays, with round piers and seat bases. There is a small perpendicular clerestory. There is a rood beam with a rood. The chancel has a finely decorated exterior east wall with checker patterns and three (empty) niches. There are also several mass dials. The chancel has a 15th century canopy over its piscina and sedilia. The north east end of the nave originally had a Chapel, There is a squint, a tomb slab from circa 1300 and a wall recess. In the centre of the chancel floor is a large brass to Sir William Calthorpe, died 1420.

Burnham Thorpe is famous for being the birthplace of Lord Nelson, and he was baptised in the church. There are several references to him in the church. The lectern is made from a beam from HMS victory, given by Lords of the Admiralty in 1881. There is also a bust of Nelson and a Memorial for his father who was rector at the church and died in 1802. The church was renovated for the centenary of the Battle of Trafalgar in 1905.

There is a Purbeck marble font dating from the 13th century with pointed arches on the faces.

There is a small but fine organ which is currently the earliest survival by maker Samuel Street.