Investment Gold Coins "Coins minted after 1800 which are of a purity of not less than 900 thousandths, which are, or have been, legal tender in the country of origin, which are normally sold for a price not exceeding 180% of the gold content of the coin. Also, coins which are included on either of the lists included in Notice 701/21A Investment gold coins".

To give you an easy, at-a-glance, list, we have extracted from the full list, a short list of the most obvious coins.

Quick List
Krugerrands (all 4 sizes)
British Sovereigns , Half Sovereigns , £2, £5
Britannias (all 4 sizes)
Canadian Maple Leafs
USA 1, ¹ / ₂ , ¹ / ₁₀ Ounce Eagles
USA $20 , $10 (most), $5 (most), $2 ¹ / ₂ , $1
Australian Nuggets
Austrian 100 and 20 Coronas
Austrian 1 and 4 Ducats
Austrian 20 and 10 Francs
Austrian Philharmonikers
Belgian 20 Francs
Denmark 20 and Kroners
French 20 Francs
German 20, 10, and 5 Marks
Italian 80, 40, and 20 Lire
Mexican "Onza" coins, 50, 20, 10, 5, 2 ¹ / ₂ , 2, and 1 Pesos
Dutch 10 and 5 Guilders
Norwegian 20 Kroners
South African Sovereign, Half Sovereign, 2 and 1 Rand, Pond and Half Pond, all sizes of Krugerrands
Swiss 100 and 20 Francs

Notes
The above list covers over 99% of the commonly traded bullion coins. Some of the coins we have omitted from the list may be frequently traded in their home country, but are only seen infrequently in the UK.
The situation regarding some of the USA $10 and $5 is still unclear, although we believe most of the older coins should be included. We will update this page as any new information appears.