Of course, its not a REAL MG!

[T1 Terry]

1 is the lane you are supposed to occupy if you're not overtaking. You are supposed to overtake incrementally in lanes 2, 3 and 4.

However, most car drivers are ill informed and/or stupid and sit in Lane 3.

So, lane one is the gutter side lane, you'd get killed over here if you stayed in that lane, if the daredevil drivers didn't get you, the trucks would.
Lane 2 is where you drive if you just want to get there in one piece.
The traffic island lane by your description Lane 3, is for BMW drivers, emergency vehicles and for proper overtaking where the driver believes speed limit does not apply to them ....

T1 Terry