Former UK Prime Minister Boris Johnson has handed over his unredacted WhatsApp messages and notebooks to the Cabinet Office in response to a request from the COVID-19 Inquiry. The inquiry, chaired by Lady Hallett, seeks to provide insight into the UK government’s decision-making during the pandemic. The Cabinet Office argued against releasing the data but Johnson’s spokesman confirmed that all requested material, including his WhatsApps and notebooks, had been handed over in full. Johnson urged the Cabinet Office to disclose the material to the inquiry and is instructing new solicitors to represent him. Lady Hallett said the requested messages would help the inquiry assess whether Johnson’s government dealt adequately with COVID-19-related issues. Should a compromise not be reached, the government may face a legal battle.