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.

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.

The one fatwa that everyone here is probably familiar with is the Salman Rushdie fatwa, but a fatwa doesn't have to be a violent thing at all. A fatwa is simply a ruling on Islamic law; there can be fatwas on clothing.

Whenever one writes a book one should have a notional reader in mind.

There's crucial distinction that has to be drawn between the Shari'a, which is this hugely expansive vision of cosmic order that I've been describing, and principles of Islamic law, known in Arabic as "Fiqh" - a word that means understanding. If you're a devout Muslim, you don't argue against the Shari'a; the Shari'a is the path that God has laid down. But what you can do, and what people are doing all the time, is arguing over the correct interpretation of the Shari'a, arguing over the Fiqh. That's something that has been going on throughout Islamic history.

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 was a teenager when General Zia took power in the Pakistan; I was in my twenties when I went there during the late 1980s and I saw then not only the novel punishments that he was introducing - because they were novel, and this is again something that's very important to understand, it's only in the last thirty, forty years, since 1979 in fact, that these penalties have been revived anywhere in the world apart from Saudi Arabia.