British workers joined unions in unprecedented numbers , from a total of 1,559,000 in 1893 to 4,145,000 in 1914 .
The two decades before the First World War saw widespread development of trade unionism in Britain .
Britain workers joined unions in unprecedented numbers , from a total of 1,559,000 in 1893 to 4,145,000 in 1914 .
The two decades before the First World War saw widespread development of trade unionism in Britain .