The Battle of Cable Street was a series of clashes that took place at several locations in the inner East End, most notably Cable Street, on Sunday 4 October 1936. It was a clash between the Metropolitan Police, sent to protect a march by members of the British Union of Fascists led by Oswald Mosley, and various de jure and de facto anti-fascist demonstrators, including local trade unionists, communists, anarchists, British Jews, supported in particular by Irish workers, and socialist groups. The anti-fascist counter-demonstration included both organised and unaffiliated participants.
The British Union of Fascists (BUF) had advertised a march to take place on Sunday 4 October 1936, the fourth anniversary of their organisation. Thousands of BUF followers, dressed in their Blackshirt uniform, intended to march through the heart of the East End, an area which then had a large Jewish population.
The BUF would march from Tower Hill and divide into four columns, each heading for one of four open air public meetings where Mosley and others would address gatherings of BUF supporters:
Salmon Lane, Limehouse at 5pm
Stafford Road, Bow at 6pm
Victoria Park Square, Bethnal Green at 6pm
Aske Street, Shoreditch at 6:30pm
The Jewish People's Council organised a petition, calling for the march to be banned, which gathered the signature of 100,000 East Londoners, including the Mayors of the five East London Boroughs (Hackney, Shoreditch, Stepney, Bethnal Green and Poplar) in two days. Home Secretary John Simon denied the request to outlaw the march.
Very large numbers of people took part in the events, in part due to the good weather, but estimates of the numbers of participants vary enormously:
Estimates of Fascist participants range from 2,000–3,000 up to 5,000.
There were 6,000–7,000 policemen, including many mounted police. The Police had wireless vans and a spotter plane sending updates on crowd numbers and movements to Sir Philip Game's HQ, established on a side street by Tower Hill.