Original sentence: Romford is part of the continuously built-up area of London and is contiguous with Chadwell Heath to the west, Collier Row to the north, Gidea Park to the east and Hornchurch to the south east
Edited sentence: Romford has formed part of the continuously built-up area of London since the 1930s and is contiguous with Chadwell Heath to the west, Collier Row to the north, Gidea Park to the east and Hornchurch to the south east