Elaborately battlemented and pinnacled C15 nave and north aisle
plain late C15 south aisle
North transept with Decorated tracery of C14, but roof raised in 1861, south transept rebuilt in C19 in matching style
West of south transept a C17 two-storey- and-attic annexe called the 'Cottage'. Chancel externally entirely of 1902-3 with harsh tracery and pierced parapet
Outstanding 2- bay north-east chapel built c1430 for the Bonham and Croke families in highly carved Perpendicular style
lavishly sculpted battlements and gargoyles
West porch has lierne vault with Baynard of Lackham arms. 'Cottage' annexe has ovolo-moulded mullion windows and blocked west door of later C17 type, but a new 'yle' with gallery is mentioned in 1619
Deep moulded elliptical-arched south door with hoodmould possibly early C17
Interior: evidence of several phases of building: tower arch interrupted at springing, C15 north aisle has springers for vaulting too low for tall C15 nave piers
Nave has original C15 roof boarded in C19
North-east chapel has exceptionally rich lierne vaulting with centre pendants, the bosses carved, the vaults springing above finely-canopied wall-niches
Furnishings: chancel reredos 1902, various wall plaques of C18 and C19 to Talbot family including Sir John Talbot (d 1714), the architectural frame of which is now the War Memorial, West Street (q.v.). North-east chapel has some C15 stained glass and exceptional Renaissance memorial (1566) to Sir W. Sharington of Lacock Abbey, possibly by J. Chapman
South transept, or Lackham chapel, has series of memorials to owners of Lackham House from C15 to C20 including fine brass to R. Baynard (d 1501), two elaborately painted wall panels of 1623 to east and Lady U. Baynard, various C18 marble plaques to members of the Montagu family, including one to Capt J. Montagu hero of Earl Howe's 1794 naval victory off Ushant, and brightly coloured south window of 1862 to Capt F.W. Rooke
In south aisle marble plaque to Bishop Johnson of Worcester (d 1774) and some C17 wall plaques
In nave font 1861 by Blomfield.