Another archived Sotos interview, this time from the Mr Skin website (of all places) to promote Pure Filth:
https://web.archive.org/web/20120701095259/http://blog.mrskin.com/peter-sotos-the-mr-skin-skinterview-pics---14593
There's an article/interview by Andreas Falkenberg in the magazine Natt & Dag, but unfortunately it's all in Norwegian:
https://issuu.com/nattogdag/docs/2011-mai-oslo.pdf (would love to read an English translation). An earlier issue had Dennis Cooper interviewed by the same author, and Sotos gets namechecked a few times. Unfortunately, a mugshot of Levi Bellfield is used in place of a photo of Sotos (I never could quite figure out why his photo was prominent on the front page of the Peter Sotos Moderated yahoo group).
Someone on Steve Albini's Electrical Audio forum interviewed PS for a college class on censorship, but as I'm not a member there I've not got a copy of it (I believe some of the questions and answers make up part of the text of Mine, if the cover of the 9BB edition is to be trusted). Another interview I'd like to read in full...
On an unrelated note, some time ago I reread some bits of Selfish, Little and the P. Sex text in the first Waitress regarding how Peter first got hold of *that* magazine that ultimately got him charged with possession following his arrest, and whilst he doesn't outright mention the name of who it was that sent him it, he offers enough generous clues to suggest who it could have been... send your answers on a postcard/private message!