Police have released CCTV footage of a robbery in which a cashier was handed a note that read, "I've got a gun". <br /><br />The woman was working on her own in the Esso filling station when a man approached her and gave her a note from his pocket and said he wanted money. <br /><br />The robbers' accomplice waited at the entrance of the petrol station, while the woman handed over the cash, then both men made off.
