Like many other mints, the Royal Mint issues bullion coins in precious metals, having much higher intrinsic value than their face value. The quarter ounce (1/4 oz) platinum coins are denominated as Twenty-five Pounds (£25).
The coins are legal tender, but are not intended for circulation. They are targeted at bullion investors or collectors who appreciate the special editions as pieces of art. The coins are typically "one-year" types usually issued in parallel with other denominations with the same reverse designs.
Britannia as a symbol has been depicted on British coinage for centuries. The bullion series called Britannia has been issued in gold since 1987 and in silver since 1997; it has a "definitive" depiction - used on bullion coins (Brilliant Uncirculated grade), as well as “Britannia, the Changing Face of Britain” - a series of one-year designs like this one - used on proofs made for collectors.
While firmly rooted in the times of the Romans, a modern Britannia has emerged, appearing as a symbol of design excellence in high fashion magazines and associated with all things fashionable during the ‘Cool Britannia’ phase in the 1990s. On the 30th anniversary of the gold Britannia bullion coin and 20 anniversary of the silver Britannia range, fine art student Louis Tamlyn has created a contemporary reverse design, reflecting a time of political change when the eyes of the world have often been on Britain. His design also contains a trident mint mark that celebrates these important anniversaries. | 
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