Newly released government files relate to Sir Keir Starmer’s decision to appoint Lord Peter Mandelson as the UK ambassador to the United States. The documents, released in a second tranche, include messages and other correspondence connected to the appointment process. Multiple outlets report that Mandelson told the UK government it would “never regret” naming him to the Washington role. Some reporting says that pledge later proved “wrong,” describing an outcome within months of his appointment, though the specific basis and details are not consistently laid out across the coverage. Other information highlighted in the reporting is that the files include thousands of private WhatsApp messages and related materials, which have been made public as part of the release. The documents are also framed as raising questions about how the government weighed a political appointment against a career diplomat alternative. While the items confirm the “never regret” assurance and provide further context on the appointment, the reports note that not all questions have been fully answered by the released material.