Complex sentence: Various works of repair and decoration have been carried out over the years, for instance after suffering subsidence, underpinning works were undertaken in 2002 together with large-scale repairs to the stonework at a cost of more than £200,000.
Split into simpler sentences: Various works of repair and decoration have been carried out over the years. Substantial underpinning works were undertaken in 2002 together with large-scale repairs to the stonework at a cost of more than £200,000.