Police are appealing for help to identify a man they want to speak to in connection with the incident.
At around 12.30pm on 10th November, a woman in her 20s and man in his 60s were reportedly approached on Flatford Drive by a man described to be in his early 20s.
He asked them for a lighter before claiming he had a knife.
The pair then went into a nearby property and the man later returned with two other men who assaulted them both.
The woman suffered a fractured cheekbone in the incident, while the man was left with minor injuries.
One of the suspects is described as being in his 40s, white, roughly five foot six inches tall, and bald. The second is described as around six foot tall, with short spiky hair and aged between 19 and 20.
If you recognise the person in the e-fit, or witnessed the incident, get in touch with police on 101 quoting crime reference 42/179467/19.