evidence: It is when the clarion voice of House of Commons Speaker John Bercow calls "Jeremy Corbyn", that Full Fact swings into action. It is midday on a Wednesday in late March, and in the fact-checking charity’s office in central London, all eyeballs are on two TVs showing Prime Minister’s Questions (PMQs). Since its inception in 2010, Full Fact has been parsing claims from British politicians and media, cross-referencing them with reliable data and labelling them as inaccurate or correct. Claims are picked from sources including TV programmes such as Question Time or Newsnight, newspapers, electoral materials, and PMQs, which Full Fact probes before posting results in real time on Twitter. [...] Full Fact’s love for corrections sets it apart from many other fact-checking groups. Most organisations just publish their fact-checks, naming and shaming the person who made the claim. Full Fact takes the extra step of requesting official corrections. Politicians, including former Prime Minister David Cameron, have rectified their statements after Full Fact called them out. And Moy says that Full Fact’s dedication has helped change how newspapers make corrections.