 MISC: When Theo, Kee and Miriam move between Syds vehicle and the  bus to take them to Bexhill, the M3 motorway is visible at the top  right of the frame. This scene was filmed at Chobham test track in  Surrey (the control tower for the test track also features  prominently here) but traffic on the motorway is visible underneath  the bridge which swoops around to the right of the frame.