There's been some weird author related topics on Radio 4's A Point of View by John Gray just lately, including Machen, Mervyn Peake and Walter de la Mare.
I think all three were interesting and thoughtful pieces. I've read Straw Dogs by Gray, which I really liked... I'm tempted to buy his new book which is about writers... I wouldn't be surprised if these shows were taken in part from that.
I've been reading the poetry, and while it is not weird, and while the bulk of it is more High Modernist than not, it sheds light on Peake's interests and writing. It was also written while he was writing the Gormenghast books (and after he contracted Parkinsons), so there is some degree of overlap of interest. Plus, as a bonus, the Carcenet edition has many examples of his artwork.