English accent as known little of the residents in England And one English accent has used in England.
And "Received Pronunciation". Started as an accent to use in the school, university, and BBC news channel.
In a school or university, it is taught by the accent RP. Wherever they have any accent It is taught to use the basic accent
Finally, However we speak any language We can't say without accent. (it is impossible to speak English without an accent, and no one will say "this not English accent.").