Is it legal to go all the way round a Mini- roundabout ?

[Magog]

Is it legal to go all the way round a Mini-roundabout and head of back in the direction you came from? Seen this done a few times, and might have done it myself once or twice, but is it actually legal? Certainly when I've seen it done, especially with lots of traffic around it generally seems to cause confusion and be a little dangerous, particularly when theres not enough room to do it successfully.