I have a fire extinguisher in my boot. Am I a firefighter? If I call you a bollox, are you?
Just because you give something a name doesn't make it so!
If you're on the Government list of Essential workers then De facto you are, they're who decides who are essential workers.
If you think about it logically we are essential, we are the only transport service that can bring people door to door and at all hours, if those heroes that continue to work weren't there, then there'd be an outcry for us to get out to work