Thanks Jon.
"The male DNA was shown not to match Jeremy’s DNA. The prosecution team attempted to find out whose DNA this was but David Boutflour, Peter Eaton, Robert Boutflour and Anthony Pargeter all refused to give a DNA sample to be checked against this male DNA found inside the sound moderator even though some of them had definitely handled the moderator, including David Bouflour who found DRB/1."
It doesn´t hurt to have a DNA sample taken - not at all. You have to wonder why they refused to cooperate.