The marking where she cut into my lane are wrong, but that's no excuse for her to be in the wrong lane, I was in the correct lane 100%.
Map link: http://goo.gl/maps/Jm85G
Dom
But looking at the google maps link, you still cut them up.
You approached in lane 3 and, correctly, sit tight to the middle of the roundabout (as per the red lorry in the map link).
After the solid line (where the red lorry is), your lane spirals across to become lane 2 of the roundabout - which leads off to the exit, becoming lane 2 of the exit road.
I assume the other driver entered the roundabout in lane 2 (of the road at the 1o'clock position) - which becomes lane 1 of the exit road