Does a plank across a stream constitute an illegal border crossing? Is chorizo still legal in Northern Ireland? Thankfully the SBP are here to provide information and clarification.

Patrollers carry out a suspiciously lengthy strip-search on a smuggler, dispose of some controlled explosives with a controlled explosion, and suffer some contentious fallout from a visit to a Mexican restaurant. Meanwhile, the 'virtual border' gets a real grilling from a BBC reporter. Comic mockumentary following the SBP, the visible presence ensuring the border remains invisible.