Pictures: Charles III now officially King of Britain

Charles III has officially been declared the King of Britain, in the first-ever televised accession ceremony in St James’s Palace on Saturday.

The formalities come after King Charles last night pledged to follow his “darling mama’s” life of service in his first address to the nation.

He also spoke of his “profound sorrow” at her death and praised the “affection, admiration and respect” the Queen inspired that “became the hallmark of her reign”.

The King spoke of her “unswerving dedication” as he took a “solemn pledge” to uphold the same “constitutional principles” for “the remaining time god grants me”.

And he poignantly touched on the Queen’s “qualities with warmth, humour and an unerring ability always to see the best in people.”

The King ended the speech by saying: “To my darling Mama, as you begin your last great journey to join my dear late Papa, I want simply to say this: thank you.

UK Prime Minister Liz Truss and senior members of her government have also taken oaths of loyalty to King Charles III in the House of Commons.

Charles is king and head of state of 14 sovereign statesincluding Australia, Canada, Jamaica, New Zealand and Papua New Guinea.