Shallow-pitched plain-tile roofs hidden by low projecting parapets with ridgeback copings.
West elevation of nave has central cusped Y-tracery early C14 window and large stepped buttress to south side.
Nave aisle has blocked chamfered pointed doorcase to west, cusped Y-tracery C14 window
massive later buttress to east, and a 3-light C15 east window.
Chancel has a C17 2-light: chamfered mullion window to west and to east a C19 polygonal vestry with chamfered pointed doorcase and chamfered single light windows.
Beyond, to east, is a single C14 Y-tracery window.
East chancel elevation has full-height corner buttresses and central C15 panel tracery window in deep moulded surround with hoodmould, the lower part of the window blocked in C19.
South elevation has two C17, tall chamfered mullion windows to chancel
one 3-light cusped intersecting tracery C14 window, flanked by stepped buttresses to nave, with gabled C18 porch to west.
Above a clerestory of three C17 2-light chamfered mullion windows.
INTERIOR has three-bay C15 north arcade with hexagonal piers, moulded capitals and double-chamfered pointed arches.
All roofs are C16, but much restored.
C19 rood screen in Dec Style between nave and chancel.
To east side of the sedilla is C14 arched piscina.
Also to west end of nave is the C19 octagonal stone font on coloured marble columns which has a sumptuously carved Jacobean weighted cover.
SK2835 : St Andrew, Radbourne - Font
Pulpit to east end of nave also C19.
Numerous monuments including several to the Pole family of Radbourne Hall, now placed in north aisle.
The most impressive of these is the full height wall memorial of 1684 to German Pole, which is generally attributed to Grinling Gibbons.
Near this place was buried German Pole, the only son of German Pole, the distinguished soldier born on 6 October 1626. He joined to himself in matrimony Anne, the eldest daughter of Richard Newdigate and he married on the 17th day of December 1650, Piously and with dedicated mind assiduously worshipped God, loyal to the King and faithful to his country. He died on 28 March 1683 without issue, appointing Samuel Pole, son of Edward pole his sole heir. Anne Pole was born on 16 January 1632 and died November 1700. The monument was erected according to the provisions of his last will in memory of the said German and of his father and mother, and of his beloved wife. It was made by Grinling Gibbons. In front are effigies of other members of the Pole family.
Also in north aisle are two re-set C15 effigies of either Peter or John de la Pole and his wife.
On the floor are two slabs, one in marble of 1676 and one in slate with coat of arms to top of 1710, both to the Pole family.
West end of nave has oval wall memorial with flaming urn finial to Mary Parker of 1708 and south side of chancel has elaborate Gothick C19 wall memorial to Hunt family.
Pair of C18 hatchments to west end of church.
East window has C19 stained glass and south nave window has small C20 stained glass panel, otherwise windows have clear glass.