New Zealand's Chief Justice, Dame Sian Elias, has been invited to be on the panel of British law lords that will hear the Privy Council appeal of the convicted double murderer Mark Lundy.
Lundy is serving a life sentence for killing his wife Christine Lundy and their seven year old daughter at the family's Palmerston North home in August 2000.
In 2002, the Court of Appeal threw out his case and increased his minimum non-parole period to 20 years.
His appeal to the Privy Council is based on the argument the scientific evidence given by the Crown is unreliable.
The three day hearing will begin on 17 June before four law lords who have invited Dame Elias to join them.
The Privy Council said such an invitation was made only occasionally.