Before the introduction of the Public Order Act 1986, policing public order was based on various relevant common law offences, and the Public Order Act 1936. Several factors influenced the introduction of the Public Order Act 1986. Significant public disorder, such as the Southall riot in 1979, the Brixton riot that extended to other cities in 1981, and the national miner's strike and associated disorder between 1984 and 1985 – in particular the Battle of Orgreave in June 1984 – and the Battle of the Beanfield in June 1985. Furthermore, the 1983 Law Commission report, "Criminal Law: Offences Relating to Public Order" recommended updating the law.