My G G G G Uncle, Samuel Sproston CHALLENER, was for a time a member of the City of London police Force. This was the first police force and quiet small. They have a museum at Wood Street Police Office, 37 Wood Street, LONDON EC2P 2NQ and I found them very helpful. You may well find they have your ancestors record of service and number on file. Good hunting Christopher Still looking for: CHALLENER SPROSTON TREMBLE SCOPES STEVENS-BURT GOLDING (East London) MANNING (18th C. Cheshire)