The Law Commission is currently engaged in reviewing the Judicature Act - the core law which governs the operation of our courts. As part of this review, they have produced an issues paper [PDF] on the need for a register Of judges’ pecuniary interests.
I've given the paper a quick browse, and it seems they take the judges' side on this: the law as it stands is currently adequate
The Greens get this - they put up the member's bill which has forced the Law Commission to look at this topic. So does Labour. What's shocking is that the Law Commission, who have previously advocated transparency, don't. But then, they've had a change of personnel - and are now headed by a judge. Suddenly, their conclusions don't look so surprising after all...
The issues paper is open for submissions until 1 June. Submission details are here.