The Queen's ill health may again prevent her from attending church on Sunday.
The monarch has stayed out of the public eye since Christmas after being struck down with a heavy cold.
Buckingham Palace was unable to confirm whether the 90-year-old would be attending the Sunday service at Sandringham and refused to comment on Princess Anne's assurances on New Year's Day that the Queen was feeling "better".
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Speculation as to whether the Queen is well enough to resume her usual routine remains just that, as palace officials said her appearance will be confirmed after 9.30am on Sunday.