Smith's
From Tardis Wiki, the free Doctor Who reference
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Smith's was a brand of crisps.
When Susan Foreman, John Brent and Gillian Roberts broke into the Coal Hill tuck shop in 1963, all they had was cold Cadbury's chocolate, Smith's crisps and Tizer. (PROSE: Time and Relative)
Behind the scenes
The Smith's Snackfood Company is currently owned by Pepsi.