He hung a couple of items up in the wardrobe with blood flecks on them, but by the time he was considered a suspect John Hayward couldn't get a result from them.
he if believe to be guilty. Had been involved in a massacre of five people. Including a heavily bloody fight with his father. I submit it would have been more than just mete blood flecks. So having said this, there are only three possible scenarios, disposal at White House farm ( ie bonfire,) drive off in the Astra somewhere to dump the evidence, or he conceals them at head street goldhanger, I'm not drawn towards the latter as I believe he wouldn't want to bring anything too close to home