Great news.

District judge Angus Hamilton, sitting at Stratford magistrates court, said the defence had presented clear and credible evidence that illegal activity had been conducted at the Defence Systems and Equipment International (DSEI) arms fair in previous years, and that police arresting the activists had failed to investigate to ensure it was not happening again.

Court dismisses charges against London arms fair protesters
http://www.theguardian.com/world/2016/apr/15/court-dismisses-charges-against-london-arms-fair-protesters