I’ve always been under the impression that „cheers!“ was just a drinking toast but now I’ve learnt that it also means „thank you“ and „goodbye“ in British English. In the TV series Bodyguard they used it all the time in a work environment without having any drinks at hand. How do other native English speakers use the word „cheers“?

This also reminds me of a misconception of non-Russian speakers. It’s often believed that На здоровье (na zdarovje) is used the typical toast in Russian but it doesn’t mean „cheers“ in a toast but „cheers“ as thank you for a meal.