Pupils at Prince George and Princess Charlotte’s school are among those to have self-isolated after returning from coronavirus-hit northern Italy.
Four pupils from St Thomas’s Battersea School in south-west London were told to stay home amid concerns they may have the Covid-19 virus.
It comes as several schools across the UK have closed, following the outbreak of the virus in Italy.
At least eight have closed, while others have sent pupils home amid fears they may have been exposed to coronavirus during trips to northern Italy.
However Public Health England (PHE) said that its general advice is not to close schools.
Italy has sought international support to help deal with the spread of the disease, as the number of cases in the country reached 400.
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