The 2015 Taupo Medieval Faire from March 20th-22nd included a re-enactment of the signing of the Magna Carta as well as an expert talk by Dr Lindsay Diggelmann from the History Department at the University of Auckland.
You can watch a video of a play on the sealing of the Magna Carta here and Jack Perkins from Radio NZ featured the event on the Sunday 26 April edition of Spectrum. You can also watch a video of Dr Lindsay Diggelmann talking about Magna Carta at the event here. You can listen to it and check out some photos here.