The clock was restored to full working order in June 2021. It was built in 1900 by Gillette and Johnstone of Croydon and as much as possible of the original workings has been retained. The 1984 chain driven autowinder was replaced with a cable-driven unit that keeps time loss to 1s/month.

St Agatha's clock had failed catastrophically in November 2018 amd had to be switched off . In early January 2021 clockmakers Smiths of Derby took the mechanism away for repair in their workshops. Getting such a heavy item down the 74 spiral stairs  was no mean feat even with the clock completely dismantled. 

just some of its parts:

the empty case, half way up the tower: