The Queen has visited her pregnant granddaughter-in-law Kate Middleton at King Edward VII Hospital in central London.

The Duchess, who is suffering from severe morning sickness, was also visited by her younger siblings Pippa and James Middleton who spent just over an hour with their sister.

Carole Middleton, Kate's mother, was seen arriving at the hospital in a black Range Rover to visit her daughter at around 7.30pm on Wednesday.

Kate was admitted to hospital on Monday after developing the condition known as hyperemesis gravidarum.

The condition can leave patients feeling tired, dizzy and suffering from headaches - all signs of dehydration.

It now appears she is responding to treatment, with St James's Palace saying on Tuesday she "is continuing to feel better".