5 minutes after the divorce, I flew abroad with my two kids. Meanwhile, all seven members of my ex-in-law’s family had gathered at the maternity clinic to hear his mistress’s ultrasound results, but the doctor’s words left them stunned.

We drove to a small, elegant house in Chelsea, a place I had purchased through the trust months ago. It had a small garden in the back, full of bluebells and a weathered oak tree.