The Government has said it is not necessary for organisations to cover or remove existing official portraits or photos of the Queen during the period of national mourning. Guidance for the public and businesses from the Cabinet Office says: “It is not necessary to cover or remove existing official portraits or photographs in your organisation of Her Majesty as a mark of respect.
"It is the custom to leave these in place, at the discretion of the organisation. For example, you will still see in many older public buildings official portraits on display of King George VI and other previous monarchs.”
There is also “no obligation” for events or sporting fixtures to be cancelled, or for entertainment venues to be closed, during the period of national mourning, the Government has said. But official guidance suggests organisations may wish to consider cancelling or postponing events or closing venues on the day of the state funeral “as a mark of respect”.