text: Sometimes imagery have an artefacts. According to wiki https://en.wikipedia.org/wiki/Magic_Roundabout_(Swindon) here is 5 mini-roundabouts  and at this photo also 5 https://swindonian.files.wordpress.com/2013/09/postcard-of-magic-roundabout.jpg
  
  So I asking people from Swindon to confirm this