Here you can find links to do with the Magna Carta and constitutional law.
Magna Carta and the New Zealand Constitution
In this highly detailed transcript of an address that Judge of the NZ Court of Appeal David Baragwanath gave, you can find information on how the Magna Carta has influenced the law in New Zealand. You can download the 22 page transcript as an pdf file by clicking here.
New Zealand Constitutional Law – Global Legal Collection Highlights – This is short article by the US Congress Law Library about New Zealand’s legal connection with the Magna Carta and it also briefly touches upon the connection between other pieces of British law and NZ’s constitution. It also provides a list of recommended readings on NZ’s constitutional law. You can view it here.
Cabinet Manual: On the Constitution of New Zealand: An Introduction to the Foundations of the Current Form of Government
This page gives a through background into NZ’s constitution, including many links to the legislation that constitutes it. It is available here.
NZ Parliament: New Zealand Constitution
In this five page background note NZ’s constitution is explained and cites the Magna Carta as one of the imperial statutes NZ still has as law. You can read it here.