The ceremony is underway as the Queen is set to formally name the Royal Navy's largest ship at Rosyth Dockyard in Scotland.
The Royal Navy has tweeted:
More top news
The BBC, The Daily Mail, The Guardian, and Buzzfeed were among organisations not allowed access to a government meeting.
Mexico's Foreign Minister has warned Donald Trump against imposing a tax to pay for a border wall between the two nations.
Rain will affect many northern areas at first, pushing further south through the day.