Some things which accompany Queen Elizabeth are more practical, however.
“Prescription and spare reading glasses are carried for both Her Majesty and Prince Philip,” wrote Pigott.
“Barley sugar for Her Majesty to suck between speeches, a favourite hot-water bottle, and special feather pillows are all a must.”
It would seem the need for a hot-water bottle when travelling is something Elizabeth inherited from her father, George VI.
One episode, in particular, highlighted the former King’s need for the heated item.
Pigott wrote: “In 1938, embarking by royal yacht on a state visit to France, on the way to Portsmouth, it was discovered that His Majesty had forgotten his hot-water bottle.