File:Interior, St Mary's church, Leigh (16210075680).jpg

Grade II* listed.

The church consists of a west tower of four stages dating from the 15th century, although only 9 feet of the tower was originally built and a timber Belfry was erected. It was finished in the 19th century. There is a 13th century tower arch, and a separate turret with spiral staircase. The tower has six bells. There was originally a gallery in the tower which was removed in the 19th century. The nave has a three bay arcade to the south aisle, the north wall dates from the early 16th century following a fire in which the north aisle was destroyed. The remains of a 13th century pillar can still be seen with the original red stencilling. The chancel has a 14th century three Bay arcade to the south Chapel which now contains the organ from 1879.

The church was restored in 1860 when a turret was added to the chancel, and circa 1890 when the chancel was remodelled. The church contains several Ledger stones and a brass inscription which dates from 1407. On the north wall there is a brass from C.1580 showing an open coffin and Angel blowing a trumpet. There is an octagonal perpendicular font with floral motifs and grotesque masks. The pulpit dates from the 17th century.