Daisy Boyd, the sculptor, has been found dead at a private psychiatric hospital just months after her engagement to publishing heir Dan Macmillan ended.

The 28-year-old artist reportedly split from her fashion designer fiancé, who is the great grandson of the former prime minister Harold Macmillan, in July after three years together.

The circumstances of her death are unclear, but she is understood to have died at the clinic earlier earlier this week, the Mail on Sunday reports.