Around half an hour after the visit from the Queen, William, Kate and their baby were seen being driven away from Kensington Palace.
The Duchess was sitting in the back of the vehicle next to the baby seat while the Duke was a front-seat passenger.
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The baby weighed 8lb and 9oz with mother and child both ‘doing well’.
The SUV crashed minutes after police received reports of it being driven south on the northbound carriageway of the M40 on Monday.