Educating Prince William and Kate Middleton's three children comes with an eye-watering bill - and their youngest has even started school yet.
Prince George and younger sister Princess Charlotte have both returned to St Thomas' Battersea after a stint of homeschooling due to the coronavirus pandemic.
And little Prince Louis is sure to follow in their footsteps when he grows up too. But with a private education the fees soon mount up.
St Thomas' Battersea, which lets in pupils aged from four to 13 years-old, is situated in one of the capital's wealthiest areas and certainly has fees to match.
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