The interior of the church wears an antiquated air, as of primæval repose, and appears to belong mainly to the twelfth and thirteenth centuries. Many of the high-backed Jacobean pews are rudely adorned with carving, as is also the oaken pulpit; while one or two of the former still have the link and staple, used in the 'good old times' when the worshippers were accustomed to lock themselves up in their pews, a habit that affords a curious insight into the everyday manners of a bygone generation.
The font looks very primitive and ancient. A good fifteenth-century oak roodscreen divides nave from chancel, and above it appears the Decalogue, finely written in old English lettering of the date 1615. The block of masonry projecting from an adjacent wall was probably a 'penance stone.'
Above the altar are seen two small stone brackets supporting a pair of gilded wooden candlesticks, which, according to local tradition, Archbishop Laud caused to be put there, in place of certain images that had stood upon them before.
A stone tablet upon the north wall of the chancel is interesting in that it records the services of the Rev. J. Ambler, who, after being ousted from this living by the Covenanters, was reinstated at the Restoration.
North and south of the nave open out two chapels, or short transepts, called respectively the Plowden Chapel, and the Walcot Chapel. The Walcots of Walcot are a family of very ancient descent, who have held estates in this locality from time immemorial. After their day, the manor of Walcot passed to the ancestors of Lord Powis, and eventually came into the possession of no less a personage than Robert Clive, Baron Plassey, K.B., founder of the British dominion in India, who died at Walcot Hall in 1774. His name may be seen inscribed in some prayer-books still preserved in this chapel. Upon the wall above the family pew hangs the Walcot escutcheon, with three black pawns, or rooks, amidst its quarterings.
This is explained by the following note in a pedigree of the Walcot family, compiled in 1643, referring to a certain John Walcot who lived in the early part of the fifteenth century. 'This John Walcote, plainge at the Chese with King Henry the fift, Kinge of England, gave hym the check-matte with the Rouke; whereupon the Kinge chainged hys coate of armes, which was the crosse with flower-de-luces, and gave hym the Rouke for a remembrance thereof, by which he and hys posteritie hath continued to this daye.'
The Plowden chapel is separated from the nave by a plain oak screen. As already mentioned, this chapel was built by an ancestor of the Plowdens, after returning in safety from captivity in Asia Minor. It is lighted by several well-proportioned windows of early character, and contains a much dilapidated stone altar of pre-Reformation date, with two brackets up above it, probably intended for images.
In one corner stands a curious sort of grille, or iron railed structure, bearing traces of colour, and surmounted at one end by a gilded iron cross. It was customary, we understand, to place this railing around a newly made grave, to protect it from evil disposed persons.
The tower walls are enormously thick, as though intended to withstand attack. The fine old panelled oak nave roof is now hidden from below by an ugly whitewashed ceiling. The bell-frame up in the belfry is something of a curiosity, being rudely but effectively carved with dragon-like monsters having foliated tails.