https://techcrunch.com/2018/10/16/facebook-rolls-out-checks-for-uk-political-ads/

Facebook has announced it rolled out a system of checks on political ads run on its platform in the UK which requires advertisers to verify their identity and location to try to make it harder for foreign actors to meddle in domestic elections and referenda.

This follows similar rollouts of political ad transparency tools in the U.S. and Brazil.