Original sentence: Royal Tunbridge Wells, previously just Tunbridge Wells, is a town in western Kent, England,  south-east of central London, close to the border with East Sussex upon the northern edge of the High Weald, whose sandstone geology is exemplified by the rock formations at the Wellington Rocks and High Rocks
Edited sentence: Royal Tunbridge Wells, previously just Tunbridge Wells, is an affluent town in western Kent, England,  south-east of central London, close to the border with East Sussex upon the northern edge of the High Weald, whose sandstone geology is exemplified by the rock formations at the Wellington Rocks and High Rocks