A man and woman were assaulted and robbed when two men forced their way into their flat.
The men threatened the woman with a knife as she walked to her home in Braybrooke Road at about midnight on Friday, September 6.
Police believe this was a targeted attack with the two occupants forced to hand over £800 cash and cannabis plants and tied up before the men fled.
DC Dan Schiraldi said: “We are investigating the circumstances and it appears that the robbers may have known the man.
“We are keen to hear from anyone who saw the men in the area before or after the robbery. They are described as between 30 and 40 years old. One was black, slim and about 5ft 10ins tall. The other was of mixed race, muscular, 6ft 3ins tall, and wore a light coloured woolly hat and beige jacket.
“The two men carried black bin bags from the flat. Anyone with information is asked to contact police on 101 quoting serial 35 of September 6 or email firstname.lastname@example.org or call the independent charity Crimestoppers on 0800 555 111.”