One of London’s most famous landmarks, Big Ben, has been largely silent since 2017 as it underwent a massive refurbishment.
The Great Clock, which the bell is part of, has been dismantled and repaired as part of the renovation project.
It’s proved a mammoth task and delays, caused by the pandemic, have seen costs spiral to more than £80m.
As Big Ben’s time to chime moves ever closer, BBC correspondent Tim Muffett speaks to engineers and historians about the unique challenges – and privileges – of working on this once-in-a-lifetime project.
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