Britain's Prince George starts school in London

His father, Prince William, will drop him off

Britain's Prince George starts school in London

Prince George | Image via @KensingtonRoyal on Twitter

Updated: 09.25

Britain's Prince George has started his first day of school.

He is attending Thomas's Battersea - a fee-paying school in south London.

The school has 560 pupils between the ages of four and 13.

His father, Prince William, accompanied him on his first day as his mother Kate Middleton is unwell.

She has hyperemesis gravidarum, a rare condition that can lead to dehydration, weight loss and a build-up of toxins in the blood or urine called ketosis.

It was announced earlier this week that she is pregnant with her third child.

Prince William drooped four-year-old George off for his first day.

Images via @KensingtonRoyal on Twitter

Kensington Palace has used the opportunity to post photos of Prince's William and Harry on their first day of school with their mother, Princess Diana.

George is thought to be among the youngest in his year.

The school's website says its most important rule is to "be kind".

"Whilst we are proud of our record of senior school entrance and scholarship successes, we place a greater emphasis on a set of core values, which include kindness, courtesy, confidence, humility and learning to be givers, not takers", it adds.

Additional reporting: IRN