Facebook have sent the following email to verified businesss today, 25th October:
We’re always working on better ways to help people understand more about the Pages they interact with. We introduced grey verification badges in 2015 to show which Pages for businesses and organisations are authentic.
However, we’ve found that they can be more confusing than helpful, so we’re removing them on 30 October 2019. This won’t impact the way the Page appears in search results.
To learn more about how to help people find your Page and verify that it’s real, visit Facebook’s best practices.