Somebody had given me a copy of 'Hunky Dory,' which had yet to be a hit, although it was starting to percolate. I'd seen a couple of pictures of David, with his interesting hairdo and outfits, and I decided to seek him out, which wasn't difficult back then, as he was eager to do any kind of publicity.

It's funny because unlike back in the seventies when I made hardly any money, today I could just live off the past if I wanted to. I have no interest in that.

People think: 'If this photographer's looking like a big jerk-off, maybe it's okay if I do.' I like to catch my subjects off balance a bit.

I'd photographed musicians before but this was different. Syd was very charismatic, and he had the aura of a poete maudit, which made him the perfect subject for me - I realised that rock n' rollers were the modern equivalent of all the poets I was so enamoured with.

It strikes me as odd that we've made journeys with our social conditioning in certain areas, but not in others. The world is always changing; discoveries in technology and science relentlessly expose our dearest values as fictions.

I don't have any problems on social media. I have the most wonderful fans. I'm the luckiest girl in the world in that way.

I make a joke that I'm the Internet curmudgeon, but 'wary' is a good way to put it.

Star Wars' is a grand soap opera, and 'Star Trek' is about technology, they tried to explain the reality of it, as far-fetched as it might be. And that's why I've always liked the science behind the fiction.