Silverthorn Telephone Exchange Chingford (C) Richard Dunn Silverthorn Telephone Exchange was opened on the 1st of September 1930 and is located on The Ridgeway in Chingford. Although when it was built this section of road was still a part of Old Church Road. The original Chingford Exchange was at 32 Station Road Chingford but was too small to cope with the 800 lines needed at the time.
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