What are your thoughts on this?
I have nothing against it per se and have done it many times myself, traffic permitting. However, what does wind me up is people's lack of judgment. A few times in the past few years, including today, I've been looking to my right approaching a roundabout, seen that it's clear, then as usual checked my front again just before entering the roundabout - only to have to whack the brakes on because some idiot from the exit across, who should be giving way to me as he's on my left, is making a U turn and cutting directly across my path. Granted, I had yet to reach the roundabout just as he was entering, but clearly it was a mis-timing on their part as to how long they thought it'd take to turn - I can't imagine they'd cut across me like that if they were simply turning right.
I guess if I was to crash into his passenger side then I'd be held liable as I'd technically not given way to traffic already on the roundabout, but every time if I'd not gotten my brakes on they'd have hit me on the driver's side, which would indicate that they'd failed to give way to me and turned into me. The highway code does also state that we should avoid making U turns on mini roundabouts and I can see why, there's always the potential for accidents.