Many of them were heavily restored in the 19th century by Arthur Blomfield, having been plastered over in the 17th century – some of this plaster can still be seen on the south wall of the south aisle.
Arthur Blomfield undertook extensive restorations in the 19th century for many of these structures, which had previously been plastered over in the 17th century. Some remnants of the plaster are visible on the south wall of the south aisle.