Terrifying moment armed robber threatens pregnant shop-worker with six-inch knife

This is the terrifying moment a robber used a six-inch knife to threaten a pregnant shop worker - as she held her bump in fear. The man burst into a petrol garage brandishing the blade before demanding cash. Shocking CCTV shows him barging his way behind the counter to force expectant employee Natalie Simmons, 24, to open the till for him.