King Charles III delivered his first address as monarch on Friday, in remembrance of his mother, Queen Elizabeth II, saying her death has brought him "profound sorrow" and "great sadness."

"Throughout her life, her majesty, the queen, my beloved mother, was an inspiration. An example to me and to all my family. And we owe her the most heartfelt debt any family could owe to their mother for her love, affection, guidance, understanding and example," King Charles said.

The king said the queen's affection, admiration and respect were a hallmark of her reign.

"I pay tribute to my mother's memory and I honor her service," he later added.

"That promise of lifelong service I renew to all today," he said.  

He delivered the address with a framed photo on the queen on a desk.