 When Travelcard zones were introduced in 1984 by London Regional Transport, the station was in Zone B; in 2004 it moved to Zone A, and in 2008 to Zone 7.The ambition to extend the Metropolitan line into Watford town centre was revived around 1994 by London Regional Transport (LRT) when proposals were put forward to run the line to Watford Junction.The projected route was shown on an adapted version of the Tube map for internal planning purposes printed in that year.