the m25 is one of europe's busiest motorways, but  mismanagement means it usually has only six lanes, when compared to europe's best roads
where you get an idea of how crowded england, and in particular the south east is
"the m25 is one of europe's busiest motorways, but  mismanagement means it usually has only six lanes, when compared to europe's best roads" What is the definition of "m25"?