According to director Guy Ritchie, this is the first in a trilogy. Before the credits, there is a title card that reads "The Wild Bunch will return in The Real RockNRolla", hinting that this will be the title of the next installment.
The character Uri (Karel Roden) appears to be inspired by real-life Russian businessman Roman Abramovich. He physically resembles Abramovich and conducts a business meeting at a soccer stadium which echoes Abramovich's status as owner of Chelsea FC.
There are two characters whose names are a reference to characters in other movies. The character Handsome Bob (Tom Hardy) is a possible reference to Jason Statham who played Handsome Rob in The Italian Job (2003), and the character Fred the Head is similar to Doug the Head in Ritchie's previous film Snatch (2000).
The movie makes recurring use of the Black Strobe song "I'm a Man" in the soundtrack. Black Strobe became famous in the 1990s for their song "Me and Madonna", referring to the famous singer, Guy Ritchie's former wife.
Early in the movie, Cookie mentions "his twins", and that he is avoiding taking them fishing. Matt King's character Super Hans on the sitcom Peep Show (2003), also has twins, whom he mentions only once, and it is implied that he neglects.
When Lenny Cole (Tom Wilkinson) and Uri (Karel Roden) are talking business after the first payment of money has been stolen, there are oranges on the table they are having a drink at. The presence of oranges foreshadows the death of a character, much like they do in "The Godfather" trilogy.
After stealing the second money delivery to Uri (Karel Roden) from the Russian heavies and cutting the handcuffs off of one briefcase, the Wild Bunch eventually end up running off on foot in three directions. Both Handsome Bob (Tom Hardy) and Mumbles (Idris Elba) are clearly carrying briefcases with the handcuff chain hanging from the handles, presumably because they cut the chains rather than the handcuffs.