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
This article was first published by English Heritage.
As many as 50 blue plaques have been categorised as missing from across the London-wide scheme.
A prestigious symbol of recognition to some of the most influential figures in history, English Heritage is now calling on the public to help uncover information which could lead to the return of lost plaques, if they survive.
The appeal comes as we announce a new plaque to surgeon, Joseph Lister, whose original plaque disappeared (for the second time) during building work in 2017.
Plaques that are no longer installed on a building may have been lost due to war damage, demolition or during refurbishments.
We are keen to see any survivals returned so they can be conserved and even re-installed at an alternative address if any can be found.
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