Camilla, the wife of King Charles, pulled out of planned engagements this week after suffering a chest infection for which her doctors advised a period of rest.

The 77-year-old will miss the annual Festival of Remembrance at London’s Royal Albert Hall today and the main Remembrance Day ceremony tomorrow.

The ceremony at the Cenotaph war memorial is held on the nearest Sunday to Nov 11 to mark the end of World War I, and pays tribute to those who lost their lives in conflict.

“Following doctors’ guidance to ensure a full recovery from a seasonal chest infection, and to protect others from any potential risk, Her Majesty will not attend this weekend’s Remembrance events,” a palace spokesman said, adding she would mark the occasion privately at home.

Princess Kate, 42, who is gradually returning to public engagements after preventive treatment for cancer this year, will attend the Remembrance events alongside her husband Prince William, Charles and other members of the royal family.

The Princess of Wales said in September she had finished chemotherapy, but her path to full recovery would be long.

At the time, she said she would be carrying out a handful of public engagements later in the year.

Her last public appearance was in October when she met the bereaved families of three young girls who were murdered at a dance class in northwest England.

Charles, who is undergoing treatment for cancer which was diagnosed in February, recently visited Australia and Samoa.