The average bus between Cambridge and Porton Down takes 10h 1m and the fastest bus takes 5h 51m. The bus service runs several times per day from Cambridge to Porton Down. 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 3 times a day between Cambridge and Porton Down. The earliest departure is at 5:45 AM in the morning, and the last departure from Cambridge is at 6:15 PM which arrives into Porton Down at 10:03 AM. All services require a transfer at Heathrow Central Bus Station and take an average of 10h 1m. The schedules shown below are for the next available departures.



8h 18m • 3 changes


5h 51m • 3 changesArrives next day



15h 48m • 3 changes


8h 18m • 3 changes


5h 51m • 3 changesArrives next day



15h 48m • 3 changesWant to know about travelling from Cambridge to Porton Down? 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 Cambridge to Porton Down. However, there are services departing from Cambridge station and arriving at Porton Down station via Heathrow Central Bus Station station. The journey, including transfers, takes approximately 10h 1m.
Cambridge to Porton Down bus services, operated by National Express, depart from Parkside station.
Cambridge to Porton Down bus services, operated by National Express, arrive at Meeting House Lane station.
The distance between Cambridge and Porton Down is 173.6 km. The road distance is 304 km.
You can take a bus from Parkside to Firs Road Top via Heathrow Central Bus Station, Meeting House Lane, New Canal, and Endless Street in around 7h 8m.