None that I'm aware of, but the police burned the carpet and some of the bedding before any more stains could be analyzed. The bedroom carpet was peppered with blood spots, so it was a missed opportunity to pinpoint exactly where Nevill was shot.
That is correct they didn't test the bedding on his side of the bed or all the blood in the carpet. So it is a misnomer when people say his blood was not in the room proving that would have required testing all the blood. All that can be said is that the small amount of blood they tested wasn't his.
What is pretty clear is that Jeremy was around the foot of the bed and fired at least 4 shots into June and 3 into Nevill before they even had time to stand up. He fired 2 more into June's chest and another that merely grazed Nevill either as they were sitting, in the process of getting up or after they got up.
At that point his gun was empty. Here are the plausible scenarios of what occurred after such:
1) Jeremy and Nevill then began to fight on Nevill's side of the bed and June walked around to that side of the bed went to help Nevill confront him. Jeremy then fled the room to go get more ammo with his parents pursuing him and while Nevill was able to reach the kitchen and confront him there June collapsed before she made it out the door because her injuries were too severe.
2) Jeremy and Nevill then began to fight on Nevill's side of the bed and June walked around to that side of the bed went to help Nevill confront him. Jeremy then fled the room to go get more ammo with his parents pursuing him. He knocked his mother to the floor and got out the door. Nevill was able to reach the kitchen and confront him but June remained where she had been knocked down because her bullet injuries were too severe.
3) Jeremy and Nevill then began to fight on Nevill's side of the bed and June walked around to that side of the bed went to help Nevill confront him. They moved towards the door. Nevill eventually fled the room to go try to call for help or to get a weapon. He knocked his mother to the floor and pursued Nevill who somehow was able to reach the kitchen before Jeremy caught up. His mother remained on the floor because her injuries were too severe.
4) Nevill somehow ran out of the room past Jeremy. Jeremy pursued but did not catch up with Nevill until he was in the kitchen. After they left June walked around to Nevill's side of the bed to try to call for help but found the phone missing so turned around and headed for the door but collapsed because of her severe injuries.
5) Nevill somehow ran out of the room past Jeremy. Jeremy pursued but did not catch up with Nevill until he was in the kitchen. After they left June was in a daze and mindlessly walked around to Nevill's side of the bed and back to her own and collapsed because of her severe injuries.
6) Jeremy fled the room after the gun was empty with Nevill in pursuit. While they were gone June walked around to Nevill's side of the bed to try to use the phone to call for help. Finding it missing she turned and headed for the door but collapsed before she could make it to the door because of her severe injuries.
7) Jeremy decided to flee the room after the gun was empty and beat June in order to get out. While Nevill pursued June got up and went to Nevill's side to try to use the phone to call for help but found the phone missing so turned around and went towards the door but collapsed of her severe injuries before making it..
8) Jeremy decided to flee the room after the gun was empty, June went to the other side to tend to Nevill who was not fully upright yet. Nevill decided to go after Jeremy and June wound up walking towards the door but collapsed because of her severe injuries.
I personally doubt that Jeremy would have let Nevill get by him to escape. I further doubt that Nevill would have made it to the kitchen before Jeremy could catch up to him if he had escaped. I also doubt Nevill would have left June there with Jeremy. I think it is most likely that Jeremy is the one who fled to get more ammo with Nevill in pursuit to try to stop him and that he caught up with Jeremy in the kitchen.
I think it is somewhat more likely his parents tried to fight him than that he just ran away but he could have simply ran away to get more ammo before they had the ability to confront him. It is possible that the black eye his mother suffered was received during the course of trying to confront him.
What seems clear is that June walked to Nevill's side of the bed while in a mindless daze, to try to use the phone to call for help, to try to tend to Nevill or did so to confront the killer. We will never no which is the case no matter how hard we wonder.
