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Knight was the secretary of Ealing Young Communist League (YCL) in 1937, residing at 17 Almond Avenue, Ealing. The YCL met at Hanwell Library every Tuesday at 8pm. Ealing YCL was also heavily involved in the Southall Clarion Cyclying Club, the Secretary of which was S. Davies, 24 Beresford Road, Southall, Middlesex. The Clarion Movement in Southall dated back to around 1906.