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.

Brave Kez Bullock. 39, was captured on CCTV clobbering the thug with her left hand when he jammed an 8ins blade towards her face.

Footage shows Kez sitting behind the counter when two thugs burst in demanding cash from the till on Sunday (26/11) night.