In the later 15th and early 16th century the main body of the church was substantially rebuilt in the Perpendicular style, but the oldest part of the present church is the tower, which dates from around 1270.
The Decorated spire with its triple-gabled outer pinnacles, inner pinnacles, gargoyles and statues was added in the 1320s.
Only one of the twelve statues is original, the others were by George Frampton and erected around 1894.
The original statues can now be found in the cloister of New College.
The tower is plainer, having long three light bell openings with intersecting tracery.
The architect is unknown, though the master mason in 1275 was Richard of Abingdon.

The south porch was built in 1637 and was designed by Nicholas Stone, master mason to Charles I. It was a gift from Dr Morgan Owen, chaplain to Archbishop Laud.
It is highly ornate, with spiral columns supporting a curly pediment framing a shell niche with a statue of the Virgin and Child, underneath a gothic fan vault.
The style was too close to Roman baroque for the puritans of the day and the porch itself was used as evidence in Laud's execution trial, citing its 'scandalous statue' to which one witness saw 'one bow and another pray'.
The gate piers are original and the wrought iron gates are early 18th century.
The bullet holes in the statue were made by Cromwellian troopers.

Around 1328 a chapel was added, now the outer north aisle, by the rector, Adam de Brome.
The chancel was rebuilt around 1462 by Walter Hart, Bishop of Norwich, the nave and aisles were rebuilt around 1490 by the university with donations from Henry VII and several bishops whose arms decorate the nave.
The north wall of de Brome's chapel and the congregation house were remodelled in the Perpendicular style around 1510, and new windows were added to match the others in the church.
Around the same time, St Thomas chantry, now a vestry, was added.
The nave and aisle windows have panel tracery and flamboyant battlemented parapets with gargoyles and pinnacles.

The interior space has six-bay arcades with shafted piers, between the clerestory windows are canopied niches with archangels holding shields.
The roof has traceried spandrels, the chancel has transomed windows, the sedilia is decorated with cusped arches and a frieze of vine leaves.
The reredos is 15th century and contains seven ornamental canopied niches containing statues of 1933.
Restorations were carried out by Sir George Gilbert Scott in 1856-57 and 1861–62 and by Sir Thomas Graham Jackson in 1894, the parapet and pinnacles are mostly Scott's work.
De Brome's chapel has a two-bay arcade with continuous hollow chamfered arches with Perpendicular windows.
The tall arch in this aisle, connecting with the tower is a 15th-century remodelling of a late 13th century window.

Monuments include a slab with indents of a brass cross and the Virgin and Child, thought to commemorate Adam de Brome, from 1332, though the tomb chest is modern.
The wall monuments in the nave and chancel are from the late 17th century and 18th century.
The floor slab to Amy Robsart, wife of Robert Dudley, is modern.

The church furnishings were refitted in 1826-28 with gothic pews and galleries, the canopied pulpit, the font and Chancellor's throne under the west gallery were designed by Thomas Plowman.
The chancel has late 15th stalls, the panelling supporting Francesco Bassano the Younger's painting of 'The Adoration of the Shepherds' is late 17th century, the communion rail is from around 1675.
The de Brome chapel has early 18th century panelling and Chancellor's throne.

There are remnants of 15th century stained glass in the tracery lights of the east window, and 17th century shields in the de Brome Chapel.
The east window and second from east in the south aisle were designed by Augustus Pugin.
The west window in the nave is from 1891 and was designed by C.E. Kempe, the memorial window to John Keble is by Clayton and Bell in 1866.
In the later 15th and early 16th century the main body of the church was substantially rebuilt in the Perpendicular style, but the oldest part of the present church is the tower, which dates from around 1270. The Decorated spire with its triple-gabled outer pinnacles, inner pinnacles, gargoyles and statues was added in the 1320s. Only one of the twelve statues is original, the others were by George Frampton and erected around 1894. The original statues can now be found in the cloister of New College. The tower is plainer, having long three light bell openings with intersecting tracery. The architect is unknown, though the master mason in 1275 was Richard of Abingdon.
The south porch was built in 1637 and was designed by Nicholas Stone, master mason to Charles I. It was a gift from Dr Morgan Owen, chaplain to Archbishop Laud. It is highly ornate, with spiral columns supporting a curly pediment framing a shell niche with a statue of the Virgin and Child, underneath a gothic fan vault. The style was too close to Roman baroque for the puritans of the day and the porch itself was used as evidence in Laud's execution trial, citing its 'scandalous statue' to which one witness saw 'one bow and another pray'. The gate piers are original and the wrought iron gates are early 18th century. The bullet holes in the statue were made by Cromwellian troopers.
Around 1328 a chapel was added, now the outer north aisle, by the rector, Adam de Brome. The chancel was rebuilt around 1462 by Walter Hart, Bishop of Norwich, the nave and aisles were rebuilt around 1490 by the university with donations from Henry VII and several bishops whose arms decorate the nave. The north wall of de Brome's chapel and the congregation house were remodelled in the Perpendicular style around 1510, and new windows were added to match the others in the church. Around the same time, St Thomas chantry, now a vestry, was added. The nave and aisle windows have panel tracery and flamboyant battlemented parapets with gargoyles and pinnacles.
The interior space has six-bay arcades with shafted piers, between the clerestory windows are canopied niches with archangels holding shields. The roof has traceried spandrels, the chancel has transomed windows, the sedilia is decorated with cusped arches and a frieze of vine leaves. The reredos is 15th century and contains seven ornamental canopied niches containing statues of 1933. Restorations were carried out by Sir George Gilbert Scott in 1856-57 and 1861–62 and by Sir Thomas Graham Jackson in 1894, the parapet and pinnacles are mostly Scott's work. De Brome's chapel has a two-bay arcade with continuous hollow chamfered arches with Perpendicular windows. The tall arch in this aisle, connecting with the tower is a 15th-century remodelling of a late 13th century window.
Monuments include a slab with indents of a brass cross and the Virgin and Child, thought to commemorate Adam de Brome, from 1332, though the tomb chest is modern. The wall monuments in the nave and chancel are from the late 17th century and 18th century. The floor slab to Amy Robsart, wife of Robert Dudley, is modern.
The church furnishings were refitted in 1826-28 with gothic pews and galleries, the canopied pulpit, the font and Chancellor's throne under the west gallery were designed by Thomas Plowman. The chancel has late 15th stalls, the panelling supporting Francesco Bassano the Younger's painting of 'The Adoration of the Shepherds' is late 17th century, the communion rail is from around 1675. The de Brome chapel has early 18th century panelling and Chancellor's throne.
There are remnants of 15th century stained glass in the tracery lights of the east window, and 17th century shields in the de Brome Chapel. The east window and second from east in the south aisle were designed by Augustus Pugin. The west window in the nave is from 1891 and was designed by C.E. Kempe, the memorial window to John Keble is by Clayton and Bell in 1866.
University Church of St Mary the Virgin