After the Second World War, Whicker became a journalist and broadcaster, acting as a newspaper correspondent during the Korean War. After joining the BBC in 1957, he became an international reporter for their "Tonight" programme. In 1958, he began presenting "Whicker's World", which began life as a segment on the "Tonight" programme before becoming a fully-fledged series itself in the 1960s. "Whicker's World" was filmed all over the globe and became a huge ratings success in the UK. Whicker continued to present the series up until the 1990s, and he won a BAFTA Award in 1964 for his presentation in the Factual category; he also won the Richard Dimbleby Award at the 1978 BAFTA ceremony. Whicker was instrumental in launching Yorkshire Television (which made "Whicker's World" for some years), producing television programmes for them from 1969 until 1992. At the beginning of the ITV series, Whicker made "Papa Doc – The Black Sheep" (1969) on Haiti and its dictator "Papa Doc" Duvalier who made himself available to Whicker and his team.