I've always believed that you have to have the skills before you destroy the skills. If you want to be crude, be crude, but don't be crude because you don't know how to do it, because you're not perfect at drawing and pattern-cutting.

Of course, there's some you think, well I wouldn't let them in the door, but there's not many. It's very important to know that it's a mutual thing, that there is respect and a form of teamwork. With quite a few of them it can be traumatic, but there are moments in here when they do extraordinary things with their designs. There are things of beauty I get to see in this office.

A lot of people believe that you don't need to know the history and that creates newness. I disagree: we should always be informed and then destroy it.

Students may feel the criticism is harsh, but I think it's possible they haven't had criticism before. It's my job to point out when something is badly done, or when there's no point of view. To build a brand you have to have something about you. If not personality, then some thought process. I'm 40, and they're young, so they're meant to be informing me. They should be bringing me a book or something that I haven't seen, not like some obscure chant book by Dominican monks, but an image of the way they see the world.

Students sometimes turn up at my course and they look a bit like they're going to Bali with only Wellingtons and a map, and they never leave their hotel room because they didn't think to bring a bikini. I'm full of bizarre analogies like that.

Many students don't really like it (fashion). If they don't like it, they won't be able to tell you who the stylists are or the photographers. If they say they can't remember the names but they recognize the work, I'll say that's bullshit because if you were selling mobile phones, you'd know all about the phones' features and tariffs.

It's a secret language, known to all different people, in different ways, that enables them to read a subliminal message without realising they're reading it. It affects people on many levels, and even people who think they're not into fashion, or reject fashion are then being informed just in the case of rejecting it. The fact that they had to react against it was a conscious decision.