Walkabout features several scenes of animal hunting and killing, most notably a kangaroo being speared and bludgeoned to death. The Cinematograph Films (Animals) Act 1937 makes it illegal in the United Kingdom to distribute or exhibit material where the production involved inflicting pain or terror on an animal. Since the animals did not appear to suffer or be in distress the film was deemed to not contravene the Act. The film also includes scenes of nudity featuring Jenny Agutter, who the British Board of Film Classification (BBFC) surmised was 17 years old at the time of filming. The scenes did not pose a problem when submitted to the BBFC in 1971 and later in 1998; since the Protection of Children Act 1978 permitted the distribution and possession of indecent images of people over the age of 16 the issue of potential indecency had not been considered on previous occasions. However, the Sexual Offences Act 2003 raised the age threshold to 18 which meant the BBFC was required to consider the scenes of nudity in the context of the new law when the film was re-submitted in 2011. The BBFC reviewed the scenes and deemed them not to be "indecent" and passed the film uncut. Had this not been the case, the film would have been refused classification and it would have effectively made it illegal to distribute copies of the film.