I bought the BFI Blu-ray and DVD combined. I found the DVD to be much better to watch. It really did not need Blu-ray and I personally found the DVD better on the eye with less flashing. I do not think it was my player. Anyway to the film. My own interpretation of the film may offend, but it seems to me to portray a disturbed, repressed homosexual who loves and hates his mother, and tries to prove his ' Manhood ' with Joan Collins. Some with a Queer eye for film will probably see this, and James Kenney is prettier than Joan Collins. Bad casting ? It depends how you interpret the film, and the ending in its ' Shocking ' way is somehow more laughable than anything else in the scenario.
These are not criticisms as I thoroughly enjoyed the film, and PC it may not be but the Freudian analysis of the film was immensely enjoyable. And watch out for Hermione Gingold who looks like a an ugly man in drag, and she is sadly not seen enough of. It may well be a ' bad ' film, and really quite funny in all the wrong places. Worth buying, and please Americans calling it ' The Slasher ' is even more inappropriately funny.