The main constructional work was carried out in a soft Wiltshire green sand stone which, in recent years, has been showing considerable evidence of flaking. This has involved enormous outlay on repair works yet, in spite of numerous appeals for funds, much still needs to be done to preserve the fabric. It is very fortunate that the quoins, window frames, pilasters and other dressings were of Ham Hill and Portland stone. The walls are capped by a cornice and parapet, the round heads of the windows tending to emphasise the scale of the building.

Over the South doorway there is a sundial. The cornice to the West front over the door was cut into to enable the church clock to be inserted. The building was of nave, North and South aisles, and apsidal East end and with entrances on the North and South.

The tower came later and was topped by a cupola. I suspect the Bastard Brothers would have nothing to do with this as they later described it as 'a temporary wooden structure'. There is a good deal of evidence to support the belief that the completion of the West tower and erection of the cupola was the work of Nathaniel Ireson of Wincanton. It was well made and in spite of being struck by lightning on one occasion and having had numerous repairs it is still there and, I think, more in keeping with a Georgian structure than a traditional stone spire would have been. The Western tower is 80 feet high surmounted by the cupola which is 25 feet in height.