claim: The Guardian claimed that journalism charity Full Fact is “the only UK member of” Facebook’s fact-checking programme.
evidence: FactCheckNI is another UK member of Facebook’s third party fact checking programme. The Guardian promptly corrected its article. [...] The article subheader and first paragraph states that Full Fact is the only UK member of the Facebook programme: [...] We contacted The Guardian to ask for this mistake to be corrected, and the online article text was amended, with the addendum: "This article was amended on 30 July 2019. Full Fact were the first UK member of Facebook’s fact-checking programme, but is not the only such member as an earlier version said." FactCheckNI is grateful for The Guardian’s prompt attention and action.