The official Vote Leave campaign spent more than £2.7m on targeting ads at specific groups of people on Facebook – helping it to win the 2016 EU referendum.
The US social media giant has now released these ads to a committee of MPs investigating fake news – meaning everyone, not just those they were originally aimed at, can now see them.
The ads, created by Canadian company Aggregate AIQ, often focused on specific issues – such as immigration or animal rights – thought likely to push the buttons of certain groups of people, based on their age, where they lived and other personal data taken from social media and other sources.
The 120 pages of documents appear to back up the findings of the Electoral Commission, which ruled last week that Vote Leave broke electoral law by working jointly with another campaign, BeLeave – something denied by both groups.
A number of BeLeave ads were sent from the Vote Leave Facebook account, including this one: