How to use a roundabout

[TomK]

Paul - the Kiwi instructions are pretty much identical to the UK using the link you provided (thanks). If you're going straight on, you don't signal when approaching the roundabout, but signal your intention to take an exit once you've passed the last exit before yours.

I think your idea is fine unless it's a small roundabout where oncoming drivers will see you indicate and assume you plan to drive right round rather than heading straight on.