The Royal Mint of the United Kingdom, which makes the country's circulating coinage, is also very active in the bullion coinage space and issues many bullion coins which are legal tender.
Additionally, it also makes bullion which is not legal tender and is targeted at investors and not at coin collectors - such as this one.
The Royal Mint says about this product:
"To celebrate Her Majesty The Queen’s Platinum Jubilee, we have created our first platinum bullion bars featuring Britannia. Each bar displays a modern interpretation of Britannia crated by the numismatic artist Jody Clark, whose portrait of The Queen has featured on all UK coins since its introduction in 2015. In the design, Britannia wears a Corinthian helmet and holds symbols of strength and protection, which include a trident and a shield decorated with the Union flag. To mark this remarkable occasion, each bar is available presented in special jubilee-themed packaging until the end of 2022."
The bar is "minted" (struck using minting techniques similar to a coin, and not cast in the way that large investment products usually are). | 
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