Place:Chailey Rural, Sussex, England

As urbanization increased over the early 20th century, the makeup of the rural district changed. In 1934 parts of Ditchling and Wivelsfield parishes were transferred to the newly established urban district of Burgess Hill and a further part of Wivelsfield was transferred to Cuckfield. Parts of the parishes of Lewes St. Ann Without, Lewes St. John Without, South Malling Without, and Southover Without were absorbed into Lewes Municipal Borough. At the same time Newhaven Rural District was abolished and its northern and eastern parishes were transferred to Chailey Rural District. (See map on Newhaven Rural District page.)

In 1974, with the introduction of non-metropolitan districts and the division of Sussex into East and West Sussex, most of Chailey Rural District was transferred to the Lewes District in East Sussex.