Gillingham was a non-metropolitan district in Kent, England.
In 1928, the adjoining parish of Rainham was added.
In 1944, a Medway Towns Joint Amalgamation Committee was formed by the borough corporations of Chatham, Gillingham and Rochester, to discuss the possibility of the towns forming a single county borough.
In 1948, the Local Government Boundary Commission recommended that the area become a "most purposes" county borough, but the recommendation was not carried out.
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