Architectural historian Anna Keay explores restoration work on the clock tower, designed to restore it to its original gothic glory while also adding a modern lift. She discovers how 700 pieces of damaged stonework have been replaced with new Cadeby limestone, and how the dowdy black paintwork on the four great clock faces is being transformed into the original, brightly coloured scheme. She also learns how Covid-19 has impacted on efforts to replace the damaged metalwork.