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Royal Mail Mount Pleasant Sorting Office
ADDRESS:
Farringdon Road, Clerkenwell, London EC1R 4SQ
TELEPHONE:
020 7239 2311
Mount Pleasant is one of the world's largest sorting offices, covering an area of 7.5 acres. It's home to an expansive set of 23 miles of train tunnels which were built to deliver the post and did so up until May 2003. Though the railway is no longer used the tunnels, running 70 feet under the streets of central London between Whitechapel and Paddington, still remain. There are no visitors allowed.