From Wikipedia : Waltham Cross railway station is on the Lea Valley Lines, serving the suburban town of Waltham Cross in Hertfordshire, and the neighbouring Waltham Abbey in Essex, England. It is 12 miles 63 chains (20.6 km) down the line from London Liverpool Street and is situated between Enfield Lock and Cheshunt. Its three-letter station code is WLC and it is in London fare zone 7.