I've met Ivor several times, whilst working in the Owl Bookshop in Kentish Town, which was local to him. Each time, he'd come in to sign his books and generally try to chat to the staff. Once he managed to engage me in a half hour conversation. Each time though, he looked more and more frail.
Ivor appeared on the 6music show the music week a while back, and you can listen to repeats of his appearance online from their website.