Former president George Bush attended a memorial service at Westminster Abbey on Thursday to honor the estimated 80 British victims of the terrorist attacks of Sept. 11 in the United States, reports PEOPLE's London bureau. Also among the approximately 1,200 attendees was Queen Elizabeth; Prince Philip, the Duke of Edinburgh; Prince Charles; British Prime Minister Tony Blair and his wife, Cherie; U.S. Ambassador William Farrish and representatives for New York Mayor Rudolph Giuliani, the New York Police Department and New York firefighters. The archbishop of Canterbury, Dr. George Carey, gave a sermon to comfort the families and friends of those lost. "Let us work sincerely and evenhandedly for justice," he said, asking that it be "the justice that may bring the balm of peace to those open wounds that deface our dealings as nations, peoples and communities." The prime minister and actress Judi Dench read to the attendees, and afterwards the queen, wearing a black coat and a white hat with black trim, emerged from the abbey to place a bouquet of yellow roses on a stone memorial outside the abbey steps. Attendees then filed past to place approximately 75 single yellow roses tied with red, white and blue ribbons on the memorial.