Travel Insurance- cover for adventure activities

Myself and my OH are travelling to New Zealand in August for a month and hope to do all the usual adventure stuff associated with NZ i.e. white water rafting, bungee jumping, skydiving etc

Does anyone know of any insurance company that specialises in cover for these activities or any good deals available? I tried AIB but they're fairly pricy if you don't have emergency health cover for abroad on your private health insurance policy.

Some of the brokers/underwriters listed in the many existing travel insurance threads offer backpacker/extreme sports cover as an option.

Try Trailfinders; their policy covers adventure activities; pretty expensive though.

www.trailfinders.ie/insurance/split.htm