Today I got my very own Kiwi driving licence.
You have one year from entering the country to convert your licence. It was a very simple process, Filling in a DL5 form from the AA centre, taking it with photocopies and originals of your passport, UK driving licence, and proof of address, such as bank statement etc.
Whilst there they check your vision, take your photo and electronic signature, issue you with a temporary licence and the new one should be back within 2 weeks. I was there for about 20 mins, including queuing time.
hope this info helps someone
Hels