In the UK IMC rating the pilot should add 200ft on to the OCA/H for his minima for a non-precision approach. Does the extra 200ft apply to OCA/H for a circling approach to land on a different r/w, as by definition you should be VMC?
It would be utterly daft not to, wouldn't it? This is the toughest bit of most IAPs, in which it's only too easy to make a misjudgement. If you're going to add 200 ft to the easy straight-in bit, why wouldn't you add 200 ft to the bit where you're fumbling around in the clag a few hundred feet above obstacles trying to keep the runway in sight as you make what are, for conditions unlikely to have a distinct horizon, quite lively manoeuvres?