No it isn't, left lane is for 1st and 2nd exit, orientation doesn't matter.
If straight over is 3rd exit you need the right hand lane.
Might sound picky but it winds me up when I get cut up by people passing 2 exits from the left lane.
No. So based on that, on a roundabout with 3 exits (including the one you're approaching on) equally spaced in a Y configuration, if you were taking the 2nd exit you'd be in the left lane?
High way code:
https://www.gov.uk/guidance/the-highway-code/using-the-road-159-to-203
When taking the first exit (unless signs and markings indicate otherwise):
Signal left and approach the exit in the left hand lane
Keep to the left on the roundabout and signal left to leave
When taking an exit to the right or going full circle (unless signs or markings indicate otherwise):
Signal right and approach the exit in the right hand lane
Keep to the right on the roundabout until you need to change lanes to reach your exit
Signal left after you have passed the exit before the one you intend to take
When taking any intermediate exit, unless signs or markings indicate otherwise
select the appropriate lane on approach to and on the roundabout
you should not normally need to signal on approach
stay in this lane until you need to alter course to exit the roundabout
signal left after you have passed the exit before the one you want.
From another site:
Note: Turning right doesn't always mean that it will be the 3rd exit or more. On this sign you can see that going towards Shirley is to the right but it's the 2nd exit. Here you would still need the right-hand lane and signal right on approach.
Again, going by your rules, if the 2nd exit is going right, you'd be in the left hand lane.
Have a google and read any of the learning to drive websites - this is the stuff driving schools teach pupils to pass their test, and in fact it's what i was taught 15 odd years ago - if an exit is past 12 o'clock - right hand lane, unless there's no left exit.
Regardless of this the driver in the video WAS in the left land, then veered across into the right lane on the roundabout, then back into the left lane. Although there were no markings, there was clearly enough room for 2 cars side by side on the roundabout.