The average bus between Watford Junction and Clapham South Underground Station takes 2h 1m and the fastest bus takes 1h 34m. The bus runs at least 2 times per hour from Watford Junction to Clapham South Underground Station. The journey time may be longer on weekends and holidays; use the search form on this page to search for a specific travel date.
Buses run every 30 minutes between Watford Junction and Clapham South Underground Station. The earliest departure is at 12:42 AM at night, and the last departure from Watford Junction is at 11:42 PM which arrives into Clapham South Underground Station at 1:34 AM. All services require a transfer at Black Boy PH and take an average of 2h 1m. The schedules shown below are for the next available departures.
Arrives next day


1h 59m • 2 changes
Arrives next day


1h 54m • 2 changes
Arrives next day


1h 48m • 2 changes


1h 48m • 2 changes


2h 5m • 2 changes


2h 5m • 2 changes


1h 41m • 2 changes
Want to know about travelling from Watford Junction to Clapham South Underground Station? We have put together a list of the most frequently asked questions from our users such as: What is the cheapest mode of transport? What is the quickest option? How much do tickets usually cost? and many more.
No, there is no direct bus from Watford Junction to Clapham South Underground Station. However, there are services departing from Watford Junction station and arriving at Clapham South Underground Station station via Marble Arch. The journey, including transfers, takes approximately 2h 1m.
Watford Junction to Clapham South Underground Station bus services, operated by Arriva UK, depart from Black Boy PH station.
Watford Junction to Clapham South Underground Station bus services, operated by Arriva UK, arrive at Cedars Road / Clapham Common North Side station.
The distance between Watford Junction and Clapham South Underground Station is 29 km. The road distance is 47 km.
You can take a bus from Watford Junction station to Clapham South Underground Station via Black Boy PH, Marble Arch, Marble Arch Station / Park Lane, and Cedars Road / Clapham Common North Side in around 2h 6m.