Churchill delivered the speech in London on 14 July 1941 after reviewing the capital’s civil defence services. He praised the wardens, rescue workers, medical services, firefighters, police and others who had maintained essential services during German air raids. Recalling the disruption, destruction and casualties of the Blitz, he argued that their organisation and endurance had demonstrated Britain’s capacity to withstand sustained attack.

Churchill also warned that the reduction in bombing should not encourage complacency. He urged civil defence personnel to prepare for renewed attacks while presenting Britain as increasingly capable of striking back at Germany. The speech combines recognition of civilian service with a wider declaration of wartime determination. Its central phrase, “You do your worst – and we will do our best”, expresses a policy of continued resistance while acknowledging that further hardship and military retaliation were expected.