The incident occurred at around 10pm on Sunday 16 April when the 65-year-old victim had his phone snatched from his hand.
The victim chased after the man pleading for his phone back. The man responded by stealing his wallet and punching him several times in the face causing him to fall to the ground and leaving him with significant facial injuries.
Anyone who recognises the man is asked to contact BTP by texting 61016, or by calling 0800 40 50 40 quoting reference 2300042761.
Information can also be given anonymously to the independent charity Crimestoppers on 0800 555 111.
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