'Cept it's not a roundabout,as I discovered to my horror,when trying to do a u-turn in my bus.It looks like a roundabout and it certainly is round,but on closer inspection,on the lhs in picture,is kerbing,preventing drivers from going all the way round it.Instead,drivers have to go under the A13,to find another almost roundabout,also in the shape of a witch's hat at the other side of the A13.PS:Also known to First Bus drivers as "Madonna's Boobs.!