Rosemary Fernandes, representing Mr Amaaz, put it to PC Ward that her client was “taken by surprise” at the ticket machine and was “shocked”.
She said: “It is important you identify yourselves as police officers, isn’t it?”
PC Ward said: “I don’t think we had any time to do that. We didn’t have any time for rational discussion with this male as it turned violently quickly.”
Ms Fernandes said: “I put it to you that the defendant believed he was being attacked from behind and it all happened extremely fast.
“It is the defence’s case that he punched you in lawful self-defence on the basis that you were an assailant. Do you have any comment on that?”
PC Ward said: “I don’t know how he felt I was an assailant. He turned towards me and punched me in the face.
“He could see I was a police officer and he could see I was a female as well.”
Footage from a body-worn video camera was played to the jury which showed a bloodied and crying PC Ward being comforted by a colleague in the aftermath of the incident.
Mr Amaaz is alleged to have assaulted PC Marsden and PC Ward, causing them actual bodily harm.
He is also accused of the assault of PC Cook and the assault of Abdulkareem Ismaeil at Starbucks.
Mr Amaad is alleged to have assaulted PC Marsden, causing actual bodily harm.
Both men deny the allegations.
The trial continues.