Because there is no time of death, the convictions are unsafe, since there is no evidence that Sheila had died prior to the occasion when Jeremy met up with the police (CA07) at the scene (whf) at 3:52am...
For this reason alone, this case and these convictions need to be sent back to the appeal court, because there is at least a 50% chance that Sheila did not die until long after Jeremy arrived at the scene and was in company of the police, thus having the perfect alibi...