In 1889 there were administrative changes. The territory of the constituency was severed from Middlesex and included in the new County of London. The lower tier of local government in the area continued to be administered by parish vestries and local boards of works.
In 1900 local government in London was rationalised. The Stepney Board of Works was abolished and the civil parish of Stepney became part of a larger Metropolitan Borough of Stepney.
In the redistribution of parliamentary seats in 1918, the Metropolitan Borough was divided between three constituencies - Limehouse, Mile End and Whitechapel and St George's. The previous Stepney constituency was abolished and largely replaced by Whitechapel and St George's.
In the next major redistribution of parliamentary seats, which took effect for the 1950 United Kingdom general election, the Stepney constituency was re-created. The 1950 version of the seat comprised the whole of the Metropolitan Borough of Stepney.
The initial count for this election had Durant on 2,141 votes and Isaacson on 2,119 votes; a re-count then led to Durant on 2,052 votes and Isaacson on 2,051 votes. Further scrutiny then led to the above results.[1]