A note on his popular BBC blog read: “It is with great sadness that we can confirm that Robert Peston’s beloved wife Sian Busby has passed away after a long illness. Our thoughts are with him and his family at this tragic time.
“Robert will take a short leave of absence from the BBC to return at a later date. ”
Ms Busby was a novelist. The pair began dating when they were at different universities, although it ended when he took a posting in Brussels. They rekindled their relationship in the mid 1990s after her first marriage – from which she has a son. Simon – ended. The couple have a teenage son, Max.