The Stewards, also informally referred to as Blackshirts, were the paramilitary wing of the British Union of Fascists (BUF).
[1] They served a similar role as the Blackshirts of the National Fascist Party of Italy and also wore black uniforms.
[2] In practice, the Stewards physically assaulted hecklers and political opponents with truncheons of rubber or lead.
[2] During a gathering of 12,000 BUF members at Olympia on 7 June 1934, the Stewards counterattacked an antifascist attempt to disrupt a speech by Mosley.
The continuous violent outbreaks between communists and the defending Stewards led to Lord Rothermere, the owner of the Daily Mail, to withdraw the support of his paper, mainly out of pressure of government officials.