discrimination in religion

A CiF article by Riazat Butt covering a debate on sex discrimination in religion ends with the paragraph

The debate on this legislation – when it comes to parliament – should not be about disestablishment nor whether parliament should involve itself in religious affairs. It is about, as Key himself said, whether the two houses should endorse something that is illegal. A law is being broken when women bishops will be subject to discrimination because of their gender and it is up to parliament to intervene.

Is parliament going to intervene if there is sex discrimination in any religion, organisation or group? I can think of a few who would not welcome external meddling.