Alderney roundabout is a multi lane roundabout with no road markings on the roundabout itself.  Depending on which exit we want to take and what lane we select depends on the position we take up on the roundabout. Looking at the approach road in the top right of this picture, we can see by the arrows on the road, that the right & middle lane instructs us to turn right (2nd exit) the left lane tells us to go straight ahead.

Here's a photo of the drivers view on approach. Road markings can sometimes be faded, so we might need to look a little harder to spot them.

The picture below illustrates the routes through this roundabout.

If we are turning right (second exit) and choose the right hand lane (green route), we can use the left kerb of the roundabout to ensure our road position is correct, as we have chosen the right lane, when we exit, we must exit into the right lane and then move back to the left lane when it is safe.

If we choose the middle lane (orange route) to turn right (second exit)), we must be extra careful with our lane position when transiting by allowing enough space to our left & right for other traffic. When we exit, we will be in the left lane.

If we are going straight ahead (first exit) using the left hand lane (red route), we can use the outside kerb as a guide to make sure we do not ross into a path of any traffic in the middle lane.

Looking at the photo below of traffic established on the roundabout, the cars are showing a good position on the road.

Car 1 is using the middle lane to turn right and should exit into the left lane. Their position is good and leaves enough room for traffic to their left and right.

Car 2 is using the right lane to turn right and should exit into the right lane, if they keep the right kerb of the roundabout to their right, there position will be good.

In the photo below, see how the red car has chosen the left lane to go straight ahead 1st exit. It position is all the way over to the left, using the left kerb as a guide. There is plenty of space to their right for two cars to pass.