I also came across the typescript of an interview Oswald did for the BBC on 'Poetry for Beginners'. It's an absolutely fantastic read, in some parts I was sure I was reading Ted Hughes. I especially loved this section -
"Poems are written in the sound house of a whole body, not just with the hands. So before writing, I always spend a certain amount of time preparing my listening. I might take a day or sometimes as much as a month picking up the rhythms I find, either in other poems or in the world around me. I map them into myself by tapping my feet or punching the air and when my whole being feels like a musical score, I see what glimpses, noises, smells, I see if any creature or feeling comes to live there."
Isn't that a wonderful image? You can read the rest of the interview here.
I've since bought her Woods etc collection and thoroughly recommend it.