A Conservative Party spokesman said: "It is with great sadness that David and Samantha Cameron must confirm the death of their six-year-old son Ivan.
"Ivan, who suffered from cerebral palsy and severe epilepsy, was taken ill overnight and died at St Mary's Hospital, Paddington, early this morning.
"David and Samantha would ask that their privacy is respected at this terribly difficult time."
RIP Alvin and my thoughts are with David, Samantha and the rest of the Cameron family
Lorraine
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