Not all roundabouts are equal. The ‘give way to the car already on the rab’ works fine for the big buggers but is a total liability on the afterthought really small ones.
On those little ones, ‘give way to all vehicles coming from your right’ would work better, but because it isn’t legislated, muppets come flying in from your left thinking they are sweet if they can just get their bumper onto the rab before you do.
It makes it quite dangerous as you have to look both left and right as you approach and in built up areas the visibility is often poor so you can only see a few metres in either direction.
PS:I drove through that one at Dublin airport a few times last year. It is a doddle as it is so big you don’t even realise that you are on a roundabout.