The favored neighborhood help officer was discovered lifeless in Akholt Wooden close to her residence in Snowdown, Kent, on Tuesday April 27.
Kent Police say they wish to converse to a person who is known to have been within the Aylesham space the day after, on Wednesday April 28.
Assistant Chief Constable Tom Richards from Kent Police stated: “We at the moment are ready to launch a picture of a person we want to converse to.
“We firmly consider he has info that might assist this investigation and we urge him to come back ahead.
“We’re additionally interesting to the general public or anybody who is aware of this particular person to please come ahead together with his particulars.
“Maybe he lives close to you, maybe you’re employed with him or maybe he visits your native store to purchase meals.
‘”Please get in contact and assist us discover the solutions Julia’s household deserve.”
Kent Police have but to ascertain a motive for the 53-year-old’s homicide.
The drive stated on Thursday that it was broadening the search space to incorporate “various different areas” along with the woodland the place she was discovered.
Crimestoppers are providing a reward of as much as £10,000 for nameless info that results in her killer being convicted.