Labour’s 2019 election defeat marks a turning point in the history of the Labour Left’s struggle to democratise the Party and put socialism into the heart of the British State. It is vital that socialists use this moment to reflect on the experiences and limits of the search for socialism through the Labour Party, to equip us for the struggle in the years to come.

That's why we have put together this five-part series covering some of the key moments in Labours history from 1945 until now, with an accompanying reading list, so we can reflect on the lessons of the past and what relevance they have for how we chart our future.