It seems apart from a few people kicking and screaming, everyone agrees Bamber phoned Julie before the police.
Two independent witnesses could have easily taken the safe option and said they were not sure, when testifying. However under cross examination, both said the phone call was at 3am.
It is no good going by what Bamber says. He changed his mind several times before settling upon afterwards.
His reason for calling her - 'to hear a friendly voice', matches him calling Julie after the police. He did not need her advice as according to him he had made the decision to phone Chelmsford police station, and agreed to meet them at WHF. So he either called her to 'hear a friendly voice', or to give her an update statement.
However no one who thought things were so serious they had to call the police, would then phone someone at 3am to 'hear a friendly voice'.
The only thing supporters can say is 'no one knows what we would do in that situation. That is correct, and no one will ever find out.