Britain's real ale revolution

In 1971, a boozy trip to Ireland led four young men to create one of Europe's most influential consumer campaigns.

Alarmed by changes in brewing that they believed threatened traditional ale, they set up the Campaign for Real Ale, or CAMRA.

Graham Lees tells Reena Stanton-Sharma how an impromptu idea between friends grew into a movement that transformed Britain's beer culture.

Witness History is a short BBC World Service podcast about history that takes you inside big moments from the past through first-hand testimony and archive. Each weekday, in around nine minutes, we revisit one moment that helped shape the world and hear it through the voice of someone who was there. Scientists, artists, campaigners, soldiers, leaders and everyday people tell their true stories.

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(Photo: Graham Lees, second from left, with the three other founders of CAMRA, Bill Mellor, Jim Makin and Michael Hardman. Credit: CAMRA)