This panel centres on the role of information in the parliamentary control of executive power. It maps and analyses the challenges of information asymmetries in security and finance as two fields where executive privileges predominate. Despite a vast literature on issues of parliamentary control, the specific features and consequences of gaps of information have been somewhat disregarded. Whilst laws exist on obligations of executive institutions to share information, practice suggests that who gets access, on what issue and when to a significant extent depends on the inter-institutional relations and even at times personal relations of the actors involved. Especially in the current context of ‘post-truth‘ politics where facts are contested or even set aside regarding the most consequential political decisions, parliaments as platforms of public debate and oversight must have access to information and effectively contribute to an informed public deliberation.