Rayon Newby was mistakenly released from HMP Thameside in Woolwich on Friday, 17 March where he was serving a sentence for assault, harassment and burglary.
The 20-year-old has links to Tower Hamlets and Ilford.
Newby is a Black man, around 5ft 10ins tall, of heavy build, and a pierced left ear. He speaks with a London accent.
The Met Police say he is not be approached.
Anyone with information on his whereabouts, can call 101 or Tweet @MetCC quoting reference CAD 3195/30Mar.
To remain anonymous, contact Crimestoppers on 0800 555 111.
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