Gymaint oedd ei syched am addysg nes iddo, yn 1919, ar ôl ennill ysgoloriaeth undeb, symud i Lundain i astudio gyda Jim Griffiths ac eraill o faes glo de Cymru yn y Coleg Llafur Canolog a sefydlwyd gan Ffederasiwn Glowyr De Cymru ac Undeb Cenedlaethol y Gweithwyr Rheilffyrdd. Gadawodd y coleg yn bropogandydd sosialaidd ymroddedig, yn barod am yr yrfa wleidyddol a ddilynodd yn fuan. Fodd bynnag, parhaodd ei ddysgu gydol ei oes fel darllenydd brwd â chariad at y celfyddydau, a rhannodd y cyfan gyda’i wraig a’i gymrawd, Jennie Lee - hithau, wrth gwrs, yn mynd ymlaen i sefydlu’r Brifysgol Agored.
Such was his now thirst for education that in 1919, having won a union scholarship, he moved to London to study together with Jim Griffiths and other figures of the south Wales coalfield at the Central Labour College that had been established by the South Wales Miners Federation and National Union of Railwaymen. And from there he emerged as the committed socialist propogandist destined for the political career that soon followed. His learning, however, continued through his life as a voracious reader and a lover of the arts, all shared with his wife and comrade Jennie Lee who would of course herself go on to found the Open University.