Hi, I'm Steve, a London tour guide and owner of A London Miscellany Tours, a guided walking tour company who specialise in small number tours of the greatest city in the world!
Yes it’s a puzzling one. The nearest credible answer that I’ve found relates to the area. The railings are to be found in Bridewell Street near to Blackfriars Bridge. They front a newish Premier Inn and the thought is that they are made out of or made to look like parts of door locks in a nod to the area’s past as a prison.
A LONDON MISCELLANY 
Erm… interesting… On Wordless Wednesday, can you tell us more?
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Yes it’s a puzzling one. The nearest credible answer that I’ve found relates to the area. The railings are to be found in Bridewell Street near to Blackfriars Bridge. They front a newish Premier Inn and the thought is that they are made out of or made to look like parts of door locks in a nod to the area’s past as a prison.
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