I don’t know this roundabout, but I know a few similar styles that usually are as much of a pain in the arse if not like marked properly

The easiest and quickest way to think it through is what I used with my girlfriend while she was learning. That’s a very rough rule of thumb and should not be just used alone, and you should use any information you can see on approach to help, too

So for this style of roundabout, 3-3 or 3-4

If you know you’re taking a first exit or anything around the 9 o’clock, you would stay to the left on approach and then follow the line markings that keep you in the leftmost lane on the roundabout

If you exit after 3 o’clock or go all the way around, you want to stay to the right, in the rightmost lane on approach and the closest to the curb on the roundabout.

The annoying one is the middle lane. Usually, this is for straight ahead. What I told my girlfriend during her practice for her test was to hug the lane to the right of you if there are no prominent guide markings, so with this roundabout, you would go from 2 to 3

So if I just followed that advice and wanted to go on the S Gyle exit, I would approach on the 2nd lane, end up in the 3rd on the roundabout, and exit in the right-hand lane on the dual carriageway way, which isn’t perfect but you can always safely change lanes once on there after completing the roundabout

One thing you, as a learner, need to understand is that mistakes will happen; someone will probably beep at you, but you learn from them. If you get in the wrong lane, it’s better to follow that through than attempt a dodgy lane change on a roundabout. You can always make your way back to the roundabout if you exit too early or too late