I realized that the ignorance was profound. I don't mean that in a pejorative sense, it's just that people didn't know what the Shari'a was, as such. They knew that it was something good. I should say perhaps that the Shari'a, etymologically in Arabic, means a desert path to water. It means a path towards salvation, in the seventh-century context, to the desert people. If you have a path to water, that's the path you want to take to get you where you want to get to; where you should get to. And that much was clear but beyond that people didn't know what the rules were.

People are coupling and decoupling all the time in Great Britain. The fact that Muslims choose to precede it with a certain formula of words, shouldn't bar them from anything. But, no one's saying that polygamy should be institutionalized in this country. That Muslim's uniquely should be allowed to have two or three or four marriages.

There's a feminist critique of Muslim Arbitration Tribunals, which I'm certainly not unsympathetic to, because as I keep saying, I come from a human rights context. But there's a feminist critique of Muslim Arbitration Tribunals specifically, which says women are going to have their rights eroded by virtue of the fact of these courts are going to negotiate settlements and negotiate the dropping of criminal charges against men. There's not been any evidence of that taking place.

I spoke to my father - my father's from Pakistan and he's also a lawyer - I said to him, "Well what does the Shari'a say?" And he said, "Well, of course it doesn't justify suicide bombs," but he didn't seem to know where the Shari'a came from or what it was all about. The more I asked people in my family as well as friends, the more I realized that there seemed to be widespread ignorance in the Muslim community. And that's something which I actually found to be the case over the next two and a half, three years I spent writing the book.

My background is such that I am uneasy about religious laws, I think there's always a real danger when you start appealing to a higher authority. It's self-righteousness, it's not righteousness, it's self-righteousness that takes control. But I think that it's absolutely crucial that that's not confused with the debate that takes place over Shari'a law in Great Britain at the moment. Because as far as anybody is concerned, when you talk about Shari'a courts now you're talking about - I don't know what people think.

Whereas a man is entitled to marry three more times and that fosters great abuse, even scholars accept that. So certainly since the 1980s Shari'a courts have been established and they allow for women to go to them and they basically grant them annulment. It's not a civil divorce, they don't have the right to grant alimony or maintenance or custody.

The first rules about Islamic law weren't even written down for a century and a half after the Prophet's death, and it was another five centuries, half a millennium, before they assumed anything like a definitive form. So there have always been huge arguments over what Islamic law actually requires. There are four main schools of law in Sunni thought and there's a separate school of law in Shia thought, so these arguments do take place.