Philippa May has been left with severe facial injuries after the attack which occurred when she was walking along St John's Road on Monday October, 31 at 7.30pm.
The 43-year-old was attacked when she was walking from Uxbridge town centre.
She turned into an alley, leading to Culvert Lane when a male suspect came up behind her, pushed her to the floor and attacked her.
The suspect then made off with her Rucksack, along St John's Road past the General Elliott pub.
Phillippa managed to seek help, making her way to her Partner's house, where the police were alerted to the attack.
"Philippa has taken the brave step of releasing an image which shows the extent of her injuries and highlight the excessive violence used by her attacker" says Investigating Officer Detective Constable Reda Imane of Hillingdon CID.
"Philippa was lucky she did not suffer more serious injuries but it goes without saying that her ordeal was extremely traumatic and she has yet to return to work."
Some of Philippa's possessions were later recovered in a nearby park, but her rucksack and phone remain missing.
The suspect is described as male and was wearing a hoody and gloves.
Detective Constable Reda Imane is urging people to come forward: "I would like to appeal to members of the public that may have been travelling home from work or who live and work in the general area to come forward with any information that could assist this investigation.
"Somebody may have seen something which could prove an invaluable piece of information to catch the person responsible."
If you have any information relating to the incident, call police on 101, or you can call Crimestoppers anonymously on 0800 555 111.
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