Witnesses Mark Spencer (Lord President and Leader of the House at House of Commons), and Michael Ellis (Paymaster General and Minister for the Cabinet Office at House of Commons)
Witnesses Kathryn Stone (Parliamentary Commissioner for Standards at House of Commons), James Davies (Registrar of Members' Financial Interests at House of Commons), and Helen Reid (Senior Investigations and Complaints Manager at House of Commons)
Witnesses Esther Webber (Senior UK correspondent at Politico), Ethan Shone (Investigative Reporter at National World Newspapers), and Henry Dyer (Politics Reporter at Insider)
Witnesses Dr Hannah White (Deputy Director at Institute for Government), Professor Paul Heywood (Professor of European Politics at University of Nottingham), and Dr Jonathan Rose (Associate Professor in Politics and Research Methodology at De Montfort University)