This tradition changed in 1997, following the death of Diana, Princess of Wales, when the tabloid press reported alleged public outrage because the palace did not fly a flag at half mast. The Queen was at Balmoral Castle at the time, and so there was no flag flying. In response to this display of public opinion, the Queen ordered a break with protocol and the Union Flag was flown at half mast over the Palace on the day of Diana's funeral. Since Diana's death, the Union Flag flies from the Palace when the Queen is not in residence, and has flown at half mast upon the deaths of members of the Royal Family, and other times of national mourning such as following the terrorist bombings in London in 2005, the deaths of former U.S. President Gerald Ford and former British Prime Minister Margaret Thatcher, and the Christchurch mosque shootings in 2019 as well as the London Bridge stabbing on 29 November that year.