London

King Charles III addressed Parliament for the first time as Britain's monarch on Monday.

King Charles III was proclaimed as the new monarch of England on Saturday after his mother Queen Elizabeth II passed away last week.

In his declaration at St James's Palace, he paid tribute to his late mother Queen Elizabeth II and spoke of the "great inheritance and of the duties and heavy responsibilities of Sovereignty which have now passed to me."

The Queen, UK's longest-reigning monarch, died peacefully at Balmoral Castle on Thursday afternoon at the age of 96.

During the address, King Charles said, "My Mother's reign was unequalled in its duration, its dedication and its devotion. Even as we grieve, we give thanks for this most faithful life. I am deeply aware of this great inheritance and of the duties and heavy responsibilities of sovereignty which have now passed to me. "

"In taking up these responsibilities, I shall strive to follow the inspiring example I have been set in upholding constitutional government and to seek the peace, harmony and prosperity of the peoples of these Islands and the Commonwealth Realms and Territories throughout the world," said the new King of UK.

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The death of the Queen was formally announced by the Accession Council before Charles III was named king. The 200 or so people gathered in the room all then said 'God save the King' before documents were signed.