When Jeremy had rang Witham police station,,he got no response so the phone/s there weren't obviously being manned at that particular time. He then rang Chelmsford police station who radioed Witham station to tell them of Jeremy's call. Because Jeremy was agitated at not getting an immediate response,,he'd asked,," Christ,,what took you so long.?"
Does this sound like someone who'd allegedly fired 20 odd shots into his family.?
From that moment he left himself open to criticism,by innocently stating that his sister was mentally unwell,as though he was throwing the entire blame on to her to cover himself,,,,and this is how the police saw it.