I’ve been thinking long and hard about using the Hever Castle HIM distance event 1.9km swim, 90km cycle, 21km run as a qualifier for the 2015 long distance DUATHLONs. I’ll have to look into it some more but I believe that a 120% AG time for the bike and run components is enough to get you a place.
Apparently there are still places left at Hever (unlike many of the branded Ironman events…the price of success)