jefmcg
Guru
apologies. I seem to have wilfully misread this several times. To the extent I thought you had edited your original posting when you posted this.Then you suspect wrongly.
My position, as previously stated, is a few inches to the left of the centre of the lane I am riding in.
However, if you measure a point exactly in the middle of a 12' carriage way, then moved a few inches to the left of that point, you would still look to be dead in the middle of the lane to an observer without a tape measure or (giant) protractors. Unless "a few" is 15+ to you.
That said, a little to left of the centre of the lane sounds like exactly where I would place myself on a dual carriageway, and in my experience it's close to the sweet spot for reducing close passes.
You have my permission to carry on. (yes, I know you don't need my permission, and apologies again for the misread).