<P> The last scenes were shot in February 1971 ending with call sheet no . 113 . The last main scene to be filmed was Alex's fight with Billy Boy's gang, taking six days to cover . Shooting encompassed a total of around 113 days over six months of fairly continuous shooting . As is normal practice, there was no attempt to shoot the script in chronological order . </P> <P> The few scenes not shot on location were the Korova Milk Bar, the prison check - in area, Alex taking a bath at F. Alexander's house, and two corresponding scenes in the hallway . These sets were built at an old factory on Bullhead Road, Borehamwood, which also served as the production office . Seven call sheets are missing from the Stanley Kubrick Archive, so some locations, such as the hallway, cannot be confirmed . </P> <P> Otherwise, locations used in the film include: </P> <Ul> <Li> The attack on the tramp was filmed at the (since - renovated) southern pedestrian underpass below Wandsworth Bridge roundabout, Wandsworth, London . </Li> <Li> The unused scene of the attack on the professor was shot in Friars Square shopping centre in Aylesbury, Buckinghamshire, (then open, since covered) but dropped due to the actor dying . For the subsequent scene where the professor recognises Alex towards the latter part of the film, the tramp plays the character who recognises Alex . </Li> <Li> The Billy Boy gang fight occurs at the then - derelict Karsino hotel on Tagg's Island, Kingston upon Thames, demolished soon after . </Li> <Li> Alex's apartment is on the top floor of Canterbury House tower block, Borehamwood, Hertfordshire . An exterior blue plaque and mosaic at ground level commemorate the film's location . The Chelsea Drugstore in west London </Li> <Li> The record shop where Alex picks up the two young women was in the basement of the former Chelsea Drugstore, located on the corner of Royal Avenue and King's Road in Chelsea . </Li> <Li> The Menacing Cars scene where the Durango' 95 drives under the lorry trailer was shot by Colney Heath on Bullens Green Lane at the crossroads of Fellowes Lane, Hertfordshire . </Li> <Li> The home of the writer, site of the rape and beating, was filmed at three different locations: The arrival in the "Durango 95" by the "HOME" sign was shot on the lane leading to Munden House which is off School Lane, Bricket Wood . The house's exterior and garden with the footbridge over the pond is Milton Grundy's Japanese garden in Shipton - under - Wychwood, Oxfordshire and the interior is Skybreak House, in The Warren, Radlett, Hertfordshire . </Li> <Li> Alex throws Dim and Georgie into South Mere lake at Thamesmead South Housing Estate, London . This is 200 yards north of where Alex walks home at night through an elevated plaza (since demolished) kicking rubbish . </Li> <Li> The "Duke Of New York" pub is the since - demolished "The Bottle and Dragon" pub (formerly "The Old Leather Bottle") in Stonegrove, Edgware, London . </Li> <Li> The Cat Lady house where Alex is caught by police is Shenley Lodge, Rectory Lane, Shenley, Hertfordshire . </Li> <Li> The prison's exterior is HMP Wandsworth, its interior is the Woolwich Barracks' since demolished prison wing, Woolwich, London . </Li> <Li> The chapel where Alex scrolls the lyrics as the prisoners sing is a since - demolished building at St. Edward's College, Totteridge Lane, North London . The prison governor's office, where Alex signs consent for the Ludovico treatment, is on the same site (still standing). </Li> <Li> The two biblical fantasy scenes (Christ, and the fight scene) were filmed at Dashwood Mausoleum, West Wycombe, Buckinghamshire . </Li> <Li> The check - in at Ludovico Medical Clinic, the brain - washing film theatre, Alex's apartment block lobby with the broken elevator, Alex's hospital bedroom and police interrogation / beating room (since demolished) are all at Brunel University, Uxbridge, Middlesex . </Li> <Li> The Minister's presentation to the media of Alex's "cure" takes place at the Nettlefold Hall inside West Norwood Library, West Norwood, London . </Li> <Li> Alex is attacked by vagrants underneath the north side of the Albert Bridge, Chelsea, London . </Li> <Li> The scene where Dim and Georgie take Alex in the police Land Rover down the country lane and subsequent water trough beating is School Lane, Bricket Wood, Hertfordshire . </Li> <Li> Alex's suicide bid leap and corresponding billiard room were at the old Edgwarebury Country Club, Barnet Lane, Elstree, Hertfordshire . </Li> <Li> The hospital where Alex recovers is Princess Alexandra Hospital (Harlow), Essex . </Li> <Li> The final sexual fantasy was shot at the since - demolished Handley Page Ltd's hangars, Radlett, Hertfordshire . </Li> </Ul>

Where did the title a clockwork orange come from