Estimated spending on Royal celebrations in the UK 2019, by royal event

The source makes the following note: "Spending is calculated in terms of the additional event-specific spending on food, groceries and alcohol (celebration meals at home or in the garden, if weather permitting, celebratory spending at restaurants and pubs, spending on souvenirs and mementos, the spending by crowds (if people are likely to congregate in great numbers) and spending by foreign tourists. Overseas sales of souvenirs, whether cheap 'tat' or costly ceramics and jewellery, are another source of revenue for retailers and UK businesses. Online retail spending is included as well as spending in physical shops. Indirect sales with royalty as "influencers" over the next year or so also included separately."

* The Diamond Jubilee of Elizabeth II was a multinational celebration throughout 2012, that marked the 60th anniversary of the accession of Queen Elizabeth II on 6 February 1952.