On William IV's death, and her accession aged 18 years: Tuesday, 20 June 1837 at Kensington Palace :
I was awoke at 6 o'clock by Mamma, who told me that the Archbishop of Canterbury and Lord Conyngham were here, and wished to see me. I got out of bed and went into my sitting-room (only in my dressing-gown), and alone, and saw them. Lord Conyngham (the Lord Chamberlain) then acquainted me that my poor Uncle, the King, was no more, and had expired at 12 minutes past 2 this morning, and consequently that I am Queen. Lord Conyngham knelt down and kissed my hand, at the same time delivering to me the official announcement of the poor King's demise. The Archbishop then told me that the Queen was desirous that he should come and tell me the details of the last moments of my poor, good Uncle; he said that he had directed his mind to religion, and had died in a perfectly happy, quiet state of mind, and was quite prepared for his death. He added that the King's sufferings at the last were not very great but that there was a good deal of uneasiness. Lord Conyngham, whom I charged to express my feelings of condolence and sorrow to the poor Queen, returned directly to Windsor. I then went to my room and dressed. Since it has pleased Providence to place me in this station, I shall do my utmost to fulfil my duty towards my country; I am very young and perhaps in many, though not in all things, inexperienced, but I am sure, that very few have more real good will and more real desire to do what is fit and right than I have ...
At about half past 11 I went downstairs and held a Council in the red saloon. I went in of course quite alone, and remained seated the whole time. My two Uncles, the Dukes of Cumberland (who now succeeded William IV as King of Hanover) and Sussex, and Lord Melbourne conducted me. The declaration, the various forms, the swearing in of the Privy Councillors of which there were a great number present, and the reception of some of the Lords of Council, previous to the Council in an adjacent room (likewise alone) I subjoin here. I was not at all nervous and had the satisfaction of hearing that people were satisfied with what I had done and how I had done it.
Coronation: Thursday, 28 June 1838
I was awoke at four o'clock by the guns in the Park, and could not get much sleep afterwards on account of the noise of the people, bands, etc. Got up at 7 feeling strong and well; the Park presented a curious spectacle; crowds of people up to Constitution Hill, soldiers, bands, etc. I dressed, having taken a little breakfast before I dressed, and a little after. At half past 9 I went into the next room dressed exactly in my House of Lords costume ... At 10 I got into the State Coach with the Duchess of Sutherland and Lord Albemarle, and we began our Progress.
It was a fine day, and the crowds of people exceeded what I have ever seen; many as there were the day I went to the City, it was nothing - nothing to the multitudes, the millions of my loyal subjects who were assembled in every spot to witness the Procession. Their good humour and excessive loyalty was beyond everything, and I really cannot say how proud I feel to be the Queen of such a Nation.
The enthusiasm, affection and loyalty was really touching, and I shall ever remember this day as the proudest of my life. I came home at a little after 6, - really not feeling tired.
I then sat on the sofa for a little while ... Mamma ... remained to see the Illuminations, and only came in later ... I said to Lord Melbourne when I first sat down, I felt a little tired on my feet ... Spoke of the weight of the robes etc..and he turned round to me and said so kindly, "And you did it beautifully, - every part of it, with so much taste; it's a thing that you can't give a person advice upon; it must be left to a person."