But Snape always seemed to hate me so much.

I never meant to call you Mudblood, it just-" Lily: "Slipped out? It’s too late. I’ve made excuses for you for years. None of my friends can understand why I even talk to you. You and your precious little Death Eater friends ... You’ve chosen your way, I’ve chosen mine.

But in some ways I think it's braver to do it like this. And, to an extent, you know what? The worst that can happen is that everyone says, 'Well, that was dreadful, she should have stuck to writing for kids' and I can take that. So, yeah, I'll put it out there, and if everyone says, 'Well, that's shockingly bad – back to wizards with you', then obviously I won't be throwing a party. But I will live. I will live.

How do you remember everything from different books when you are still writing the HP series? As obsessive fans will tell you, I do slip up! Several classrooms move floors mysteriously between books and these are the least serious continuity errors! Most of the fansites will point you in the direction of my mistakes. But the essentials remain consistent from book to book because the story has been plotted for a long time and it is clear in my mind.

Turn to page three hundred and ninety-four.

Cobbled streets and no shops open past six o'clock, a communal life that seemed to revolve around church, and where you could often hear bird song and nothing else: Gaia felt as though she had fallen through a portal into a land lost in time.

If she could have done one thing to make absolutely sure that every single person in this school will read your interview, it was banning it!