From her unique perspective as former French ambassador to the UK, Sylvie Bermann examines the mistruths told by politicians surrounding the fateful 2016 Brexit referendum. Au Revoir Britannia asks the question 'How did this happen?' and exposes what she sees as the 'unrepenting' and 'inveterate' lies of the now pm, Boris Johnson. This first English edition includes a new preface exploring the future of post-Brexit Europe and Britain, and the uncertain implications of the Russian invasion of Ukraine.