Hi, My Name is Steve and I have long had an interest in this case. I think in all probability he did it, but not beyond all reasonable doubt
One thing that disturbed me was not the 'fresh' blood, not the scratchmarks above the mantlepiece, not the nevill bamber 999 call but the policeman saying he could make out a shape in the upstairs window
Was jeremy with the pc when he saw this shape, or was he told to wait in the patrol car ? If Jeremy was with him, at this point he would only have been a witness and it may have been him that first suggested shapes moving, and planted that idea in the mind of the pc, that sheila was alive and moving through the house. I also dont know what to make of the 2 bodies in the kitchen scenario.