After his arrival in London in 1876 he became an active Socialist and a brilliant platform speaker. He wrote on many social aspects of the day- on Common Sense about the War (1914), How to Settle the Irish Question (1917) and The Intelligent Woman's Guide to Socialism and Capitalism (1928). He undertook his own education at the British Museum and consequently became keenly interested in cultural subjects. Thus his prolific output included music, art and theatre reviews, which were collected into several volumes such as Music in London 1890 - 1894 (3 vols, 1931); Pen Portraits and Reviews (1931); and Our Theatres in the Nineties (3 vols, 1931). He also wrote five novels and some shorter fiction, including The Black Girl in Search of God and Some Lesser Tales and Cashel Byron's Profession, both published in Penguin's Bernard Shaw Library.
He conducted a strong attack on the London theatre and was closely associated with the intellectual revival of British theatre. His plays fall into several categories- 'Plays Pleasant'; 'Plays Unpleasant'; c
A barbed attack on the British class system, Pygmalion both delighted and scandalized its first audiences in 1914. Henry Higgins is the Pygmalion figure who believes he can transform Eliza Doolittle, a cockney flower girl, into a duchess at ease in polite society. The one thing he overlooks is that his 'creation' has a mind of her own.