Walthamstow was a local government district in southwest Essex, England from 1873 to 1965, around the town of Walthamstow. It was within the London suburbs, forming part of the London postal district and Metropolitan Police District. Its former area now corresponds to the central part of the London Borough of Waltham Forest in Greater London. Its population and area grew rapidly as London continued to develop its suburbs.

Leyton was a local government district in southwest Essex, England, from 1873 to 1965. It included the neighbourhoods of Leyton, Leytonstone and Cann Hall. It was suburban to London, forming part of the London postal district and Metropolitan Police District. It now forms the southernmost part of the London Borough of Waltham Forest in Greater London.