On a regular industrial estate in the small Sussex town of Hailsham, you’ll find a warehouse posing as a gearbox repair company - which has been the case for a length of time. But what actually goes on behind closed doors is something completely different. On Saturday, police raided the building, arrested three men and seized more than two-dozen weapons as well as ammunition.   Surveillance of the group’s operations had been a continual process over a number of weeks before the Sussex police working together with the NCA (National Crime Agency) decided to close the road and move in to