Sorry i just call it the slow lane, i meant on a 70 mph road the Lorrys, Buses, Coaches, Caravans (Limited to 50 mph) and Tractors (Which drive dangerously slow, but i understand why) i get what you mean by overtaking only and i do stay to the left but i find i have to join and leave the overtake lane constantly and someone always appears doing 80 mph so i cant get away from the slow vehicle i am now stuck behind and then i am there 5 minutes before i can get around them again.
I'm not a Dodderer lol, I stay to the left unless its really slow.
A roads are a nightmare if your stuck behind someone going very slow, but what can you do not much just keep your distance but you know someone is always behind you wanting to take a chance..