Cameron and Greensill: a timeline of events in the lobbying scandal From left, John Glen, Rishi Sunak, David Cameron, Lex Greensill and Mohammed bin Salman. Composite: Reuters/Rex/Shutterstock/UK parliament/AFP/Getty Images/Guardian Design Team Roundup of key developments since former PM became finance firm’s ‘part-time’ special adviser in 2018 Fri 23 Apr 2021 12.23 EDT Last modified on Fri 23 Apr 2021 14.31 EDT David Cameron is at the centre the UK’s largest lobbying scandal in a decade. Through emails, text messages and meetings, the former prime minister relentlessly pushed government and central bank officials on behalf of Greensill Capital – even as the pandemic unfolded.