The second lockdown is due to last until December 2 and there are fears it will wreak havoc with the UK economy.
One key difference to the second national lockdown, when compared to the first one in March, is that schools will remain open to all pupils this time.
Where will Prince George, Princess Charlotte and Prince Louis spend the second lockdown?
Kate and William are understood to have returned to London having spent half-term with George, Charlotte and Louis on the Isles of Scilly off the Cornish coast.
The Cambridges are fans of the British holiday spot and staycation there in the summer.
Whether or not Wills and Kate choose to remain in the capital with their children this lockdown remains to be seen.