Like many other mints, the Royal Mint issues bullion coins in precious metals, having much higher intrinsic value than their face value. The one ounce (1 oz) gold coins are denominated as One Hundred Pounds (£100).
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 smaller denominations with the same reverse designs.
This limited edition coin is part of the British Lion bullion range introduced by the Royal Mint in 2025.
The mint says about it:
The coin’s striking reverse design pays homage to British heraldry. For centuries, the lion has stood as a potent emblem of British heritage, evoking themes of power and resilience across Royal Coats of Arms, coins and national iconography. Woven into the United Kingdom’s broader narrative, symbolic lions can be seen across the country in sculpture and art and the animal features in some of the nation’s most beloved literature. Retaining the emblem’s significance as a symbol of national pride, the three lions are also synonymous with English sporting teams. | 
Buy this online from Royal Mint
Search for United Kingdom: Gold Ounce 2025 British Lion on eBay 
