In this article, based on a modified speech delivered as part of the ‘Radical internationalism and shifts in the global order’ panel at the ‘New Circuits of Anti-racism Conference’, King’s College London, October 2022 (IRR50), an organiser both for Palestinian liberation and migrant rights scopes the potential for international solidarity in the metropole today. He contrasts a recent revival in solidarity during the ‘Corbyn era’ with times in the nineteenth and twentieth centuries when London was a hotbed of progressive internationalism as exiles sought refuge and freedom to think, write, organise and build links. He asks what we can learn from these experiences, and what the possibilities are of such concerted internationalism in London, and Britain more generally, today.