* BillingDisplacement: The film advertising prominently places Sienna Miller with Craig, even though she plays a minor character in the film.
* TheDanza: Dragan is played by the Serbian actor Dragan Mićanović.
* FakeNationality: The Serbians are played by Romanians who, [[AsLongAsItSoundsForeign when not speaking English, speak Romanian]].
* HeyItsThatGuy:
** [[Film/CasinoRoyale James]] [[Film/QuantumOfSolace Bo]][[Film/{{Skyfall}} nd]], [[Film/{{Skyfall}} Q]], [[Series/StarTrekTheNextGeneration Chief]] [[Series/StarTrekDeepSpaceNine O'Brien]], [[Film/HarryPotter Kingsley Shacklebolt]], [[Film/TheDarkKnightRises Bane]], [[Film/GIJoeTheRiseOfCobra the Baroness]], [[Series/{{Torchwood}} Owen Harper]] and [[Film/HarryPotter Albus f***ing Dumbledore]] are all drug dealers.
** As well as some smaller characters people might recognise from various BBC shows, such as [[{{Skins}} That guy Sid owes money to (sans ridiculous moustache)]], [[Series/DoctorWho the mean 1950s father Eddie Connolly]] and [[{{Misfits}} Nathan's estranged dad]].
** With a bit of RetroactiveRecognition, [[Series/{{Constantine}} John Constantine]] is one of the junkies that XXXX and the con men/investigators question about Eddie Temple's daughter.
* PropRecycling: The Duke's severed head is the same prop as used in ''Film/{{Elizabeth}}''.
* RealitySubtext: The actor, Jamie Foreman, who plays the Duke, is the son of an actual LondonGangster, Freddie Foreman, who was an associate of the Kray Twins.
* TooSoon: In the novel, in the scene where X tries to use the Sniper to kill one of the RuthlessForeignGangsters, an American tourist is mistaken for the target, and is killed by the Sniper. This is partially PlayedForLaughs, because when the actual target runs away, the Sniper refuses to shoot him, as he was only paid for one killing that day. It's indicated that the death is spun as a casualty of the WarOnTerror. When the film was made, distributors thought that this wouldn't go over well, especially in America, so it instead became a scene where the Sniper got killed by a ScopeSnipe.
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