The division of land amounts to the southern two-thirds of the borough of Reigate and Banstead subjected to reduced boundaries losing approximately 4.7 square kilometres (plus the loss of outlying easterly Burstow and Nutfield to Tandridge and loss of Gatwick Airport to West Sussex much of which was in Horley and Charlwood) — in 1933 a relatively large of Chipstead and of Merstham in the north were lost to elevated Coulsdon within Greater London. As with Chipstead, Coulsdon is in an upper valley and plateau of the North Downs however has more railway stations and is a post town. It is the least dense former parish in the London Borough of Croydon.