The number 242 had previously been used for a London Bus route between Potters Bar and Waltham Cross, which is now operated commercially by Metroline, as this route is wholly outside Greater London.
The number 242 had previously been used for a London Bus route between Potters Bar. The number 242 had previously been used for a London Bus route between Waltham Cross. A London Bus route between Potters Bar and Waltham Cross is now operated commercially by Metroline. This route is wholly outside Greater London.