A 22-year-old man was allegedly assaulted in Erith.
He was reportedly attacked by two men in Slade Green Road at about 1.30pm on May 4.
The alleged victim was taken to a Kent hospital and subsequently to a south London hospital in a critical condition to receive treatment for serious head injuries.
It is believed that the two men approached him and pushed him over a garden wall - they then proceeded to kick and punch him.
One suspect is described as a black man, aged around 20, about 5ft 10ins tall, average build with short black hair, wearing plain dark joggers and a plain dark t-shirt.
The other is described as a lighter skinned black man, aged around 20, about 5ft 11ins tall, and carrying a dark coloured man-bag.
The 22-year-old man has since been discharged from hospital.
DC James Bray of Bexley CID said: "This was an unprovoked attack on a man in the street in broad daylight.
"I would appeal to anyone who may have witnessed the incident or may have information to contact us as soon as possible."
Anyone with information is asked to call Bexley CID on 101, or Crimestoppers anonymously on 0800 555111, quoting reference 3905512/16.
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