YOU use miles
i use miles along with just about everyone else in this country
BUT THE OFFICIAL SYSTEM IS THE METRIC SYSTEM FOR ALL EUROPEAN COUNTRY, UK INCLUDED.
We still use both because there are people like you that do not know this.
there isn't a single speed limit expressed in kilometres or a road sign (prohibitory or otherwise) expressed in kilometres.
we do not use both because i don't KNOW something; we use miles because that is the system in place.
Stop complaining, at least this is not a bug
as i said, we use miles.