I hadn't heard of this but it ties in brilliantly with this site: Making Monsters is 'a documentary that lifts the lid on micro-budget horror filmmaking'. This four-minute excerpt includes contributions from Damian Morter (The Eschatrilogy), Liam Regan (Banjo), Adam A Park (Zombie Mutation) and Dan Brownlie (Three's a Shroud) plus a couple of online reviewers (but not me, for some reason...).
It looks like this specifically covers the past few years so probably doesn't overlap too much with the remit of my book, which finishes at the end of 2008. This is what I call the British Horror Boom, 2009 and onwards - the period when the profusion of micro/zero-budget films available through new distribution channels has resulted in an unkeep-upable profusion of British horror movies, adding up to one a week for the past four years.
A Quick look at "Making Monsters" from safehouse pictures UK on Vimeo.