To the right is a blocked C14 arch with a two-centred head partly obscured by early C20 lean-to brick vestry.
North vestry to left has C17 doorway with flat four-centred head and moulded jambs.
Immediately to either side are moulded fragments, probably the tops of C17 cornices.
Arch has moulded two-centred head above which is crocketted ogee- headed niche with C19 figure of St Barnabas holding a scroll inscribed: GOSPEL OF ST MARK.
Interior of porch has collar purlin, brattished wall-plate and hatchment.
INTERIOR has C17 double hammer-beam roof with pendants, the upper portion concealed by boarded ceiling of 1888, rising from five pairs of part rectangular, part columnar wall-posts on square plinths with dentilled cornices supporting brackets with enriched pendants.
South wall has early C14 effigy, of a woman holding her heart in her hands, set in deep recess.
At east end of the wall, monument in white marble to Robert Harley, Earl of Oxford, Lord High Treasurer, impeached 1711, acquitted 1717, died 1724.
On the north wall a contemporary, superficially similar but smaller monument for Mrs Sarah Harley, died 1721.
Nearby plain rectangular black marble wall monument with two brass inscription panels to Eliza Casamajor Rogers, died 1849, and Mary Brown, died 1854.
Beneath west window a wall monument with draped sarcophagus and dove to Sarah Rogers, died 1816.
Inscription reads: SARAHAE AVGVSTAE / CONIVGI DESIDERATISSIMAE / EDVARDVS ROGERS INFELICITER SUPERSTES / VIXIT ANNOS FERME XXVIII / MORTVA, EHEVI DEI DECEMB XXVIII AS MDCCCXVI On the same wall a slate and marble monument for Charles Rogers, died 1820, has obelisk, urn and inscription "CELERITER ET JUCUNDE".
To the right is wall monument to the ten men of the parish who fell 1914-19.
Communion rails are late C19 and oak supported on twisted wrought iron posts with brass foliated decoration.
Font is C19 with octagonal bowl enriched on its sides with dove, cross, IHS, etc. Bowl is supported on central drum and four shafts.
Lectern is late C19 of wrought iron and brass.
Brass book rest with a pair of flanking candlesticks.
Stained glass includes east window of 1888 for Robert and Patience Harley, inscribed I AM THE: RESURRECTION AND: THE LIFE.