A Bath Oliver is a hard, dry biscuit or cracker[1] made from flour, butter, yeast and milk; often eaten with cheese.

The royal archivist pried out all of the major stones from the regalia and placed them inside a Bath Oliver tin so that the most important part of the Crown jewels could be quickly removed and hidden, should the Germans invade.

[3] In October 2020 United Biscuits temporarily suspended production of Bath Olivers owing to COVID-19 disruption, without a prior announcement made.

and it would comfort him to see, each evening at dusk, Mrs. Driver appear at the head of the stairs and cross the passage carrying a tray for Aunt Sophy with Bath Oliver biscuits and the tall, cut glass decanter of Fine Old Pale Madeira."

Similarly, Bath Oliver biscuits seem to evoke a nostalgic, very English, idyll in the first chapter of Puck of Pook's Hill by Rudyard Kipling: "[the child heroes of the story] were not, of course, allowed to act on Midsummer Night itself, but they went down after tea on Midsummer Eve, when the shadows were growing, and they took their supper—hard-boiled eggs, Bath Oliver biscuits, and salt in an envelope—with them.

(1937), part III, chapter one, mystery writer Michael Innes places Bath Olivers among the standard amenities of a country house bedroom in the 1930s.

In the UK 1970s sitcom Porridge episode, "The Harder They Fall, genial Harry Grout asks Norman Stanley Fletcher "if he wants a Bath Oliver?