I have been doing that for years, Many years ago I was a driving instructor in the armed services, at the start of the course we drove trainees from Portsmouth to Hayling Island to a deserted army barracks so they could have their first drive in safety.
The First roundabout we came to always had a slow moving long Que in the left lane so we used the right lane, about 12 of us in 3 ton army trucks, though not all of us together, used the right lane and went round so the traffic in the correct lane to turn left give had to way to us, a couple of weeks after we started doing this some drivers complained to the police about it, the police got in touch with us, they said we were of course doing nothing illegal but would we please stop doing it as we were upesting other drivers.
So we did.