The Queen may miss the annual New Year's Day church service at Sandringham, with a decision expected to be taken on Sunday morning on whether she is well enough to attend.

The 90-year-old monarch has not been seen in public for 11 days since she and Prince Philip fell ill with what was officially described as "heavy colds".

The illness forced the Queen to miss the Christmas Day service at St Mary Magdalene church in Sandringham for the first time in 28 years.