Mum Kate Middleton has a ‘strict off-limits rule’ for dealing with royal tantrums

Prince William and Kate Middleton reportedly have one parenting strict rule about shouting.

Any of their three children caught raising their voices at each other are dealt with immediately, a source told the Sun.

“Shouting is absolutely ‘off limits’ for the children and any hint of shouting at each other is dealt with by removal,” the insider said.

“The naughty child is taken away from the scene of the row or disruption and talked to calmly by either Kate or William.

“Things are explained and consequences outlined and they never shout at them.”

The Duke and Duchess of Cambridge also employ a “no nonsense” nanny to maintain order while they are off on royal duties, the Mirror reports.

Maria Borrallo is a royal tantrum expert who provides childcare support for Prince George, Princess Charlotte and Prince Louis.

She was hired by the family in 2014 when George was eight months old and she trained at the prestigious Norland College.

She lives in Kensington Palace and travels with the family on visits and royal tours as a discrete presence.

Like all Norland Nannies Maria has a “no-nonsense” approach and is believed to be very strict with the royal children.

There are a number of rules nannies at the Bath college are taught to impose on the children in their care, so it’s likely that George, Charlotte and Louis have to follow them.

Norland expert Louise Heren told the Sun: “There will be no messing.

“That’s because Maria will be aware that as they step off planes, holding mum’s hands, smiling and waving to the crowds, there can’t be any crying or terrible twos or tantrums.”

William and Kate are keen to give their children as normal an upbringing as possible, the Mirror reports.

They are regularly seen with them on the school run and reportedly love doing fun activities as a family such as crafts, baking and playing in the garden.

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Prince George turned eight on Thursday with the Cambridges releasing a photo of him beaming sat on one of their Land Rovers.

The snap was taken by Kate, who is a dab hand at photography, and including the vehicle was seen as a poignant tribute to his great-grandfather Prince Philip, who loved the British car design.

The Duke of Edinburgh passed away aged 99 in April.