Over the last few weeks, the Queen has suffered from various health issues. The latest announcement was that the 95-year-old monarch had sprained her back, causing her to not attend the Remembrance Sunday service at the Cenotaph in London. Just weeks before, we saw a statement from the Palace saying that it was the Queen's "firm intention" to attend the service although she was under doctor's orders to rest.

       Mr Arbiert said: "Well, she's stoic, and she copes remarkably well.

       "I mean, look at the death of Prince Philip. She will be would have been celebrating their 74th wedding anniversary in a few days time.

       "And she is stoic, and she does cope with grief. We saw her in 2002, where not only her sister died, but her mother died in what was the Golden Jubilee Year.

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       "She carries on because she puts duty above everything else.

       "The only time she hasn't was at the time of Diana's death where she stayed at Balmoral to much criticism to look after her grandsons."

       In her nearly 70 year reign, the Queen has missed the service just six times before, twice due to pregnancy and the other four times when she was on an overseas visit.

       Mr Arbiter stated that the Queen holds the service in high respect, on par with her annual Christmas message.

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       After Diana's death in 1997, the whole country united in grief.

       Diana's sons, William and Harry, and the rest of the Royal Family including the Queen, were on holiday in Balmoral.

       Due to the Queen's decision to not immediately return to Buckingham Palace, tension grew among Britain.

       There was outrage that the Queen wasn't publicly mourning, but it is widely believed that the Queen stayed in Scotland to shelter her mourning grandsons.

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       She eventually bowed to public pressure and returned from Balmoral one day earlier than planned.

       Tina Brown, author of The Diana Chronicles, said: "This was the first time in a long reign that the Queen was thinking about her family before her people.

       "We should admire her for that. Her thoughts were with her grandchildren and she wasn't thinking about how this would be played out in the media."