The Kew Gardens 50p is the rarest designs in circulation - but the withdrawn 1992-1993 EC coin has an even lower mintage. How valuable could it be?
The Olympic 50p coins, released to mark the 2012 London Games, have become sought-after collectors' items. Find out which design is most valuable.
Over 169m old £1 coins are still out there, despite no longer being legal tender. Which? explains how to trade them in, and which designs are valuable.
Four banknotes engraved with Harry Kane's face have been released into circulation - and the lucky person who finds one could be in for a windfall.
The Royal Mint has revealed which 50p coins from 2017 have the lowest mintage figures - so do you have one of these rare coins in your change?
A rare collectible 50p coin design of Paddington bear has just been released - we explain how to get one, and find out how much it could be worth
As the £2 coin turns 20 this year Which? reveals the rarest and most valuable designs in circulation that could earn you a pretty penny.
Fish and chip shops around the UK have been handing out special edition 10p coins. We look at how rare these A-Z coins are compared to valuable 50ps.
We find out the rarest and most valuable 50p coins, explain what makes a coin valuable, and give tips on what to watch out for when investing in coins
While the government consults on a proposal to scrap little-used currency, Which? looks at the rarest 1p and 2p coins and most valuable £50 banknotes.