The average bus between Cambridge and Porton Down takes 9h 33m and the fastest bus takes 5h 49m. 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 3:50 AM at night, 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 9h 33m. The schedules shown below are for the next available departures.



7h 58m • 3 changes



8h 18m • 3 changes



5h 49m • 3 changes
Arrives next day



15h 48m • 3 changes



7h 58m • 3 changes



6h 8m • 3 changes



6h 57m • 3 changes
Arrives next day



14h 28m • 3 changes
Want 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 9h 33m.
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.