Kent Police officers admitted they were “deeply shocked” as the murder investigation into his death enters its second week.
Chief Constable Alan Pughsley said the force would do “all we can” to bring their killer to justice, but warned the community to be “very safe and very careful”.
No arrests were made in connection with the murder because the police consider “all possible motives” to his death near Dover in Kent.
Mrs. James was murdered while walking his dog in Akholt Wood, near her home in the village of Snowdown. She had suffered serious head injuries.
And on Tuesday – a week to the day to the day that her body was discovered – mourners, including Ms James’ daughter Bethan Coles, left burning candles on their doorsteps in tribute to the “fiercely” faithful ”53 years old.
In a Facebook post, Ms Coles said: “A number of people have asked to have a vigil for Mum, and while I am so grateful to the people who want to remember her, I am very aware that everything gathering should be supervised (if it was even allowed).
“I have discussed this with my family and we agree that we would prefer all law enforcement resources to focus on the investigation because there is so much work to be done. “
Instead, she suggested that people wanting to remember her mother to light a candle for her and leave it at their doorstep.
She added: “It would be a nice nod to Mom in a way that doesn’t intrude on the police investigation. “
Speaking to ITV after visiting flowers left in his memory, the police chief vowed to track down Ms James’ murderer.
He said: “You can imagine the force is deeply shocked by what happened to Julia.
“We will do everything we can to find out who did this to bring them to justice. “
Prime Minister Boris Johnson paid tribute to him in a tweet.
He said, “Tonight we remember the PCSO Julia James. My thoughts are with his friends and family. “
Dover Police urged members of the public to be “careful, vigilant and aware of your surroundings” when they are on the move.
At a press conference on Friday, Kent Police Deputy Chief Constable Tom Richards refused to rule out that Ms James was killed by a stranger, someone she met on the job, someone who was trying to steal their dog or as part of a sexual assault.
Mr Richards made no comment on a potential crime weapon and also declined to say whether detectives found any signs of a struggle.