1885–1918: The Sessional Divisions of Cuckfield (except the parish of Crawley), East Grinstead, and Uckfield (except the parishes of East Heathley and Waldron).
1918–1950: The Urban Districts of Burgess Hill, Cuckfield, East Grinstead, Hayward's Heath, and Uckfield, and the Rural Districts of Cuckfield, East Grinstead, and Uckfield.
1950–1955: The Urban Districts of Cuckfield and East Grinstead, the Rural District of Uckfield, in the Rural District of Cuckfield the parishes of Ardingly, Balcombe, Bolney, Cuckfield Rural, Horsted Keynes, Lindfield Rural, Slaugham, West Hoathly, and Worth, and in the Rural District of Battle the parishes of Burwash, Etchingham, and Ticehurst.
1955–1974: As 1950 less the Battle RD parishes.
1974–1983: The Urban District of East Grinstead, and the Rural District of Uckfield.
Another General Election was required to take place before the end of 1915. The political parties had been making preparations for an election to take place and by July 1914, the following candidates had been selected;
General Election 1939–40:
Another General Election was required to take place before the end of 1940. The political parties had been making preparations for an election to take place and by the Autumn of 1939, the following candidates had been selected;
Craig, F. W. S. (1989) [1974]. British parliamentary election results 1885–1918 (2nd ed.). Chichester: Parliamentary Research Services. p. 404. ISBN0-900178-27-2.
Craig, F. W. S. (1983) [1969]. British parliamentary election results 1918–1949 (3rd ed.). Chichester: Parliamentary Research Services. p. 481. ISBN0-900178-06-X.