Continuity: When Theo has agreed to help the Fishes by getting transit papers for Kee and follows an agent to what turns out to be a meeting with Julian on a Double Decker Bus, the bus he chases and presumably boards is a thinly disguised MCW Metrobus, dating from circa 1982, with characteristic boxy, old-fashioned appearance. However, when we cut to the bus interior, it is that of a Wrightbus Gemini model, dating from 2003 or later - this model is much curvier in shape than the Metrobus. Once Julian and Theo leave the bus, it passes by, and we see that it is indeed now the modern vehicle from which they have alighted, carrying the manufacturer's stylised 'W' moulding on the rear panel.
Crew or equipment visible: When Theo enters the building to find and rescue Kee from the shooting, earplugs can be seen as he climbs the stairs.
Errors made by characters (possibly deliberate errors by the filmmakers): In the coffee shop the word "cappuccino" is misspelled on the wall. It's missing the third "c".
Errors made by characters (possibly deliberate errors by the filmmakers): Arabic graffiti next to the word "uprising" is a misspelling of "intifadah" ('uprising' in Arabic). It was written with the letter dal instead of dad. The correct spelling of intifadah uses the letter dad; it also ends with a ta marbuta, not an alef.
Crew or equipment visible: In the climactic 6-minute battle shot, just before Theo enters the hallway where he finds Kee, the camera is briefly visible in the reflection of a window.
Miscellaneous: When Theo, Kee and Miriam move between Syd's 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.
Factual errors: Before getting on the bus, the photo of the "lost dog" is of a Sheltie, and is labeled as such. But when getting on the bus, the dog is actually a Papillon, not a Sheltie.
Continuity: In the scene where Theo and Jasper smoke Strawberry Cough, the cat - despite being fast asleep every time it is in frame - changes its position between every cut.
Continuity: When Nigel yells at Alex to take his pills, Alex takes the first pill and drinks some water. The next camera shot of Alex shows him taking a second pill but his glass has more water in it than before. Also, in these same three camera swaps Nigel's pill box moves closer to his wine glass, which now has less wine than the previous shot, even though Nigel's position doesn't change.
Continuity: When Theo overhears Luke's plans to kill him, he wears socks. In the following scenes where he escapes the safe house and pushes the car, he wears shoes.
Revealing mistakes: At both the outer and inner gate of the camp (start and end of bus trip) the bus passes underneath a signpost reading "HOMELAND SECURITY - BEXHILL REFUGEE CAMP". Though located far from one another the signposts look exactly the same - down to every spot and mark of the heavily applied artificial weathering.
Crew or equipment visible: At the end of the meeting between Theo and his cousin at the "Arc of the Arts", when the camera moves to a closeup of the painting they were discussing the shadow of the cameraman is visible.