Welling is an area of South East London, England, within the London Borough of Bexley and the boundaries of the historic county of Kent. It is 1.5 miles (2.4 km) west of Bexleyheath, 4 miles (6.4 km) south east of Woolwich and 10.5 miles (16.9 km) east-southeast of Charing Cross, the traditional centre of London.