1oz Platinum Britannia Specifications
- Metal: Platinum
- Purity: .9995 fine (999.5 millesimal fineness)
- Weight: 1 troy oz (31.1035g)
- Diameter: 32.69mm
- Thickness: 2.80mm
- Face value: £100
- Legal tender: Yes - CGT exempt
- Issued by: The Royal Mint, United Kingdom
- First issued: 2018
About the 1oz Platinum Britannia
With over 1,100 years of history, The Royal Mint is the original British maker of well-crafted, thoughtfully designed products, services and experiences. The Platinum Britannia, launched in 2018, completes the precious metals Britannia family alongside its gold and silver counterparts - and brings the same hallmarks of Royal Mint quality to the platinum market.
The Britannia is one of Britain's most enduring coin designs, depicting the female personification of the nation - helmeted, shield and trident in hand, with the sea behind her. The design has evolved across different artists over the years, each bringing a fresh interpretation to this iconic figure. More recent issues feature intricate security details including a latent image, micro-engraved trident pattern, and guilloche background - making the Platinum Britannia one of the most technically sophisticated bullion coins in the world.
The obverse carries the portrait of the reigning monarch. Coins issued between 2018 and 2022 feature Jody Clark's fifth portrait of Queen Elizabeth II - a detail that makes these earlier issues particularly interesting to collectors. From 2023, the obverse transitioned to Martin Jennings' portrait of King Charles III, marking the beginning of a new chapter for the series. Both eras are equally valued for their platinum content; the year of issue makes no difference to what we pay.
Mintage of the Platinum Britannia is considerably more limited than the gold or silver versions, reflecting the narrower investor market for platinum. This relative scarcity adds a layer of collector interest alongside the investment appeal, though as with all bullion coins, our buying price reflects the metal value rather than numismatic considerations.
Buy 1oz Platinum Britannias
Gold Traders also sells 1oz Platinum Britannias as an Official Partner of The Royal Mint.
Capital Gains Tax
As UK legal tender with a £100 face value, the 1oz Platinum Britannia is exempt from Capital Gains Tax on any profit made from its sale. This applies regardless of quantity or the size of the gain - making it one of the most tax-efficient platinum investments available to UK sellers. See our British Platinum Coins page for more detail on CGT, and always confirm your personal position with a qualified tax adviser.
How Much Is a 1oz Platinum Britannia Worth Today?
Your payment is based on the live platinum spot price and the coin's platinum content:
- Live platinum spot price (1oz .999): £1,496.39
- Gold Traders buying price today: £1,475.22
Both figures are updated daily in line with the market. The buying price reflects our current rate for a 1oz Platinum Britannia in any year of issue and any bullion-grade condition.
How to Sell Your Platinum Britannia
Complete our claim form, send your coin via Royal Mail Special Delivery (fully tracked and insured), and we'll assess and value it on the day it arrives - Monday to Friday. Once you confirm, payment goes to your bank account the same day. We don't use freepost bags - find out why that matters.
