The constituency consisted of the Urban District of Chigwell (transferred from Woodford) and the Rural District of Ongar (transferred from Chelmsford).[1]
On abolition, Chigwell, which comprised the bulk of the constituency, was included in the new constituency of Epping Forest and the Rural District of Ongar (now part of the merged Rural District of Epping and Ongar) was included in the new constituency of Brentwood and Ongar. A small part in the south (part of Hainault) had been absorbed into the London Borough of Redbridge on its creation within Greater London and was now added to Ilford North.
^Craig, Fred W. S. (1972). Boundaries of parliamentary constituencies 1885-1972;. Chichester: Political Reference Publications. ISBN0900178094. OCLC539011.