This is the moment a quick-thinking female shop assistant tackled an armed robber who lunged at her with a knife - by giving him a SLAP. <br /><br />Brave Kez Bullock. 39, was captured on CCTV clobbering the thug with her left hand when he jammed an 8ins blade towards her face. <br /><br />Footage shows Kez sitting behind the counter when two thugs burst in demanding cash from the till on Sunday (26/11) night.
