Constable Doris Doppings

Constable Doris Doppings from Scotland Yard calls into the Grub in Episode 35 looking for Eddo.  Eddo has apparently become 'top dog' as a drug dealer in her local area by riding around on her bicycle selling cocaine and marijuana however Doris is more concerned that Eddo has not been wearing a bicycle helmet.  
Greg is only too willing to assist in the investigation and rat out his friend, which Doris (who coincidently sounds like Eddo doing a Michael Caine impression) seems to take exception to.