In view of her 2.7 million followers, she penned: “As the mother of children who have had to grow up without a father, I’m aware that #fathersday is not always a happy day.
“If today is a cause for celebration, I wish you much joy. If, for whatever reason, it’s a cause of heartache, I send much love.”
Fans flocked to comment on the post, as many offered their condolences to the small-screen star.
One wrote: “Thank you Nigella for these kind words, it is indeed a hard day for many.”