Paul Burrell has said that he was "sad" to see how "frail" the Queen looked at the weekend.
Princess Diana's former butler, 63, appeared on Lorraine with royal photographer Arthur Edwards as they discussed whether the public would accept Prince Charles' wife Camilla as Queen Consort when he accepts the throne.
It comes after the Queen used Accession Day in her Platinum Jubilee year to express her wish for her daughter-in-law to become Queen Consort.