https://techcrunch.com/2019/07/16/uk-facebook-users-now-have-a-tool-to-report-scam-ads/

Facebook has launched a tool for UK users to report ads they suspect of being scams.

The feature can be accessed by clicking the three dots in the top right corner of each ad on Facebook, then selecting ‘Report ad’, then ‘Misleading or scam ad’ and finally: ‘Send a detailed scam report’.