Complex sentence: In about 1824 much work was done at the church which included plastering the roof of the north aisle, replacing both the mediaeval carvings and the 400 year-old pews, the latter being done by local contractor William Seymour of Arlesey.
Split into simpler sentences: In about 1824 much work was done at the church which included plastering the roof of the north aisle and replacing the mediaeval carvings. At the same time the 400 year-old pews were replaced by local contractor William Seymour of Arlesey.