The 2026 Britannia 1oz Gold Coin is an official British bullion coin produced by The Royal Mint. Struck from 99.99% pure gold (24 carat), the coin weighs 31.21 grams and contains 31.10348 grams of fine gold, with a diameter of 32.69mm. It carries a £100 face value and is recognised as legal tender in the UK.

The reverse of the coin features the modern Lady Britannia design by Philip Nathan, first introduced in 2021. This updated design incorporates a range of advanced security features, allowing for quick and easy visual authentication. The obverse displays the official King Charles III effigy by Martin Jennings.

As the UK’s official gold bullion coin, the Britannia is a highly regarded option for investors. Importantly, due to its UK legal tender status, the coin is exempt from Capital Gains Tax (CGT) and is also VAT-free, making it a particularly tax-efficient investment.