By Adam Dutton & Zahra Khaliq Police have released CCTV footage showing the terrifying moment a group of violent robbers attacked members of staff in a string of robberies. The thieves, who were jailed for 54 years, are seen striking at shops, arcades and a travel agent amidst a crime spree across the West Midlands between November 2022 and last June. Dramatic footage shows the moment the thieves emerge with hammers, knives and an axe as they storm businesses and threaten staff members during working hours. The group were known to use violence against workers and even hold them hostage before …