The incident happened at about 8pm, in Sycamore Drive, when a man wearing a red top with the hood up cycled up to a woman, slapped her round the back of the head and attempted to steal her handbag. The man attempted to pull the bag from her but failed and cycled off in the direction of Swallowbush Road. Police say the victim was not injured, but was left shaken and upset. Detective Constable Karin Peters said: We would like to hear from anyone who was in the area at the time and may have seen someone matching the description. Any information, no matter how insignificant it may seem, could prove valuable to the investigation. Anyone with information is asked to call DC Peters police on 101, or Crimestoppers, anonymously, on 0800555111.