World in Action was a British investigative current affairs programme made by Granada Television from 1963 until 1998. Its campaigning journalism frequently had a major impact on events of the day. Its production teams often took audacious risks and gained a solid reputation for its often unorthodox, some said left-wing, approach.

Cabinet ministers fell victim to its probings. Numerous innocent victims of the British criminal justice system, including the Birmingham Six, were released from jail. Honouring the programme in its fiftieth anniversary awards, the Political Studies Association, said: "World in Action thrived on unveiling corruption and highlighting underhand dealings. World in Action came to be seen as hard-hitting investigative journalism at its best."

In its heyday World in Action drew audiences of up to 23 million in Britain alone, equivalent to almost half the population.