Complex sentence: The church was built between 1822 and 1825, at a cost of £15,611 (£as of), A grant of £15,636 was given by the Church Building Commission.
Split into simpler sentences: The church was built between 1822 and 1825. The cost of building it was £15,611 (£as of), and a grant of £15,636 was given by the Church Building Commission.