The trial had been expected to continue until Thursday, July 5, however magistrates dismissed the case against them on the first day.
Two Bristol activists who were arrested for their part in a protest against the UK selling arms to Turkey have been cleared of wrongdoing.
The pair were part of a group of six people detained for aggravated trespass outside Cardiff’s Motorpoint Arena where the Defence Procurement, Research, Technology and Exportability (DPRTE) exhibition was held earlier this year on March 27.