The one penny coin is currently the lowest circulating denomination of the British (decimal) Pound Sterling, after the half penny was demonetised in 1984.
In August 2005 the Royal Mint launched a competition to find new reverse designs for all circulating coins apart from the £2 coin. The winner, announced in April 2008, was Matthew Dent, whose designs were gradually introduced into the circulating British coinage from mid-2008. In a world-first concept, the designs for the 1p, 2p, 5p, 10p, 20p and 50p coins depict sections of the Royal Shield that form the whole shield when placed together. The shield in its entirety is featured on the £1 coin.
The new 1p coin design, which replaced the earlier 1p design by Christopher Ironside, depicts the left section between the first and third quarter of the shield, representing England and Northern Ireland. The coin's obverse remains largely unchanged, but the beading (the ring of dots around the coin's circumference), which no longer features on the coin's reverse, has also been removed from the obverse.
One penny and two pence coins are legal tender only up to the sum of 20p; this means that it is permissible to refuse payment of sums greater than this amount in 1p and 2p coins in order to settle a debt.
Coins issued in 2011 have now been circulating for eight years.