Hilldene was an electoral ward in the London Borough of Havering from 1965 to 2002.
It returned councillors to Havering London Borough Council.
The ward was subject to a boundary revision in 1978 that increased the number of councillors from two to three.
The ward covered part of the London County Council-built Harold Hill estate that was completed in 1958.
[2] The by-election took place on 2 July 1992, following the resignation of Mark Flewitt.