It's understood that Queen Camilla will not attend the commemoration as she is sick with a chest infection, and has been advised by doctors to take a short period of rest.

Queen Camilla, the wife of Britain’s King Charles III, will be sitting out a number of scheduled events so that she can recover from a recent illness. In a statement on Tuesday, Buckingham Palace said the queen “is currently unwell with a chest infection,

Queen Camilla has canceled her scheduled public appearances this week as she battles a chest infection. "Her Majesty The Queen is currently unwell with a chest infection, for which her doctors have advised a short period of rest,