[[caption-width-right:350:He's had enough. ''[[BerserkButton Now call that bloody ambulance!]]'']]

Creator/MichaelCaine stars as Harry Brown, a widowed pensioner and [[RetiredBadass ex-Royal Marine]] who lives on a UsefulNotes/{{council estate}} terrorised by [[TeensAreMonsters feral teens]]. After an old friend confronts a bunch of them and is killed, he decides that enough is enough and is off to go chav-hunting. In essence, he's the British version of [[Film/DeathWish Paul Kersey]].

The cast is noted for being very diverse, ranging from professional actors to actual and former gangsters, prostitutes and drug dealers. There is also an aspiring lawyer who also acts. Michael Caine himself lived not far from where the movie was shot and chose to do the project to raise awareness about English sink estates [[note]][[SeparatedByACommonLanguage Translates to American]] as "the projects"[[/note]] and the lifestyle lived in them.

An interview between Michael Caine and [[Series/TheDailyShow Jon Stewart]] can be found [[http://www.thedailyshow.com/watch/thu-april-29-2010/michael-caine here]].
!!Tropes associated with the film:

* AssholeVictim: [[spoiler: "You should have called an ambulance, for the girl!"]]
* AntiVillain: Invoked by one of the chavs during an interrogation.
* AxCrazy: Noel Winters is a bloodthirsty, sadistic lunatic who rapes and kills for his own sick amusement. His [[EvilUncle uncle]] is just as much of a psychopath as his nephew is.
* BallisticDiscount: Attempted by Harry and [[AvertedTrope averted]] by the gun dealer who doesn't want him touching the guns until he's paid for them. [[spoiler: Then Harry draws the dealer's attention to the [[DistractedByTheSexy home made porno]] playing on the TV and proceeds to play the trope straight.]]
* BadassGrandpa
** RetiredBadass: A former Royal Marine.
*** Except... It's pretty clear from the paraphernalia in Harry's box that he was a Para - the knife especially - and the photograph shows a detachment in Ulster which would be quite inappropriate for Marines, so this maybe a case of Lost In Translation
* BigDamnHeroes: [[spoiler: Harry saves Detective Frampton from being strangled to death by shooting Noel Winters. Shortly after, he is saved from being killed by Sid with the timely intervention of a pair of CO-19 officers.]]
* CassandraTruth: Frampton informs the superintendent that Harry is the best suspect for some of the murders. Additionally, earlier in the film, Len flat-out tells Harry that [[spoiler: [[{{Foreshadowing}} Sid is not the man Harry thinks he is]].]]
* ChekhovsGun:
** In the film's climax: [[spoiler: Frampton's radio, which she briefly uses to try and call for help before Noel attacks her. The camera focuses on it again when a pair of laser gun sight points appear on Sid's chest.]]
** In the same scene, the trope is also [[AvertedTrope averted]]: [[spoiler: When Frampton and Noel are struggling, Noel drops his gun next to Frampton. She never attempts to pick up the gun, although in her defense, she had recently suffered two blows to the head and was being strangled by Noel.]]
** And of course, let's not forget [[spoiler: The .38 snubnose. The first gun that Harry asks about, and the last one he uses in the film, to kill Noel.]]
* CrackOhMyBack: Harry's often limited by his own aging body and a bad case of emphysema.
* DarkerAndEdgier: Geriatric widower with a distinguished military record lives in a bad part of town that used to be a good part of town. When he's had enough of the local teenagers' shenanigans, he shows them what a tough guy really looks like. Sounds like ''Film/GranTorino'' right? [[BloodierAndGorier No.]]
* ImperialStormtrooperMarksmanshipAcademy: Displayed by the chavs Harry encounters in the underpass [[spoiler: while he sends one of their number towards them as bait with barbed wire around his neck.]] Of course, they are shooting GangstaStyle.
* JackBauerInterrogationTechnique: Harry interrogates Marky by whipping him.
* LaserGuidedKarma: The chavs on the motorbike in the prologue. [[spoiler: Played literally in the climax with [[BigBad Sid]], getting taken out by a pair of CO-19 officers with laser gun sights.]]
* LetsGetDangerous: when he decides [[{{ThisMeansWar}} he's had enough.]]
* LowerClassLout: The villains are all textbook examples, albeit better armed than usual.
* MoralityChain: Harry's comatose wife.
* NotWithTheSafetyOnYouWont: [[spoiler:"You've failed to maintain your weapon, son."]]
* PointyHairedBoss: The superintendent comes off as a very unreasonable boss, barely considering Frampton's theories and in the end getting a medal for the mediocre Operation Blue Jay.
* PoliceAreUseless: Played with. The police in this movie are far from inactive, but their effectiveness is questionable. Some cops are shown as more useless than others.
* [[{{BlackAndGrayMorality}} Revenge Thriller]]: Harry is the hero only because the people he's up against are far, far worse.
** TraumaCongaLine: To be fair, he goes through a lot of shit and tries to let the authorities deal with it before taking matters into his own hands.
* RecklessGunUsage: Most of the thugs are ridiculously negligent with their firearms - the drug dealer who Harry goes to buy weapons from takes the cake, though, given that he uses his pistol as a pipe, stuffing it with weed before sucking the smoke up through the barrel.
** Not terribly surprising when you consider just ''how'' strung out and generally messed up he is.
** This also extends to [[PantsPositiveSafety both Noel and Harry concealing firearms in their waistbands]] and [[spoiler: Noel and another gang member shooting wildly into darkness, [[IJustShotMarvinInTheFace causing the death of Marky]].]]
*** Possibly justified considering how the thugs got the guns, and ex-military Harry doesn't exactly have a holster with him.
* TheReveal: The identity of the BigBad, [[spoiler: Sid. The spoiler being so short was a spoiler in itself, so I'm adding some text]].
* RoaringRampageOfRevenge
* SwordOverHead: [[spoiler:The gun dealer... On both sides.]]
* TheStoic: Police Superintendent Childs. When the riot starts, the chavs are throwing bottles and rocks at the police armored up in riot gear. Childs casually observes the whole thing, with his helmet in his hand. As projectiles thrown by the chavs land all around him, he casually turns around and walks back to his car, not even bothering to don his helmet until the very end of the scene.
* TeensAreMonsters: Once again, chavs.
* TooDumbToLive: One thug uses his pistol as a pipe, stuffing weed into the chamber so he can light it up and suck the fumes through the barrel. Inevitably, when Harry makes his move moments later, the pistol misfires.
* UnderestimatingBadassery: Brown's first kill is of a young man who no doubt assumed he would be an easy mark because of his age and intoxication. ''All'' of his targets clearly deem him easy prey because of this, never knowing that they're dealing with a retired Marine who's fed-up with them terrorizing his neighborhood.
* {{Understatement}}: On promotional stops, Michael Caine described Harry as "being upset" by his friend's death.
* VigilanteMan