Geograph - photograph every grid square

To mark the Diamond Jubilee of Queen Elizabeth II, and also the London Olympic Games, in 2012, Fields in Trust (the trading name of the National Playing Fields Association) set up the Queen Elizabeth II Fields Challenge. The scheme mirrored in many respects the King George Field programme of 1935 in that it aimed to give protection in perpetuity to free outdoor recreational spaces. Whereas the 1935 scheme largely resulted in new spaces, to a large extent the 2012 Challenge involved funding of improvements to existing open space.
The fundamental link is that open space associated with Fields in Trust cannot be disposed of without the Trust's consent.
The Queen Elizabeth II Fields Challenge has resulted in around 1600 spaces across the UK* being designated, totalling over 20,000 acres of protected recreational space. Each location is awarded a heraldic plaque cast in aluminium, 40cm in diameter including the royal coat of arms and an inscription.
*In Scotland the fields are known as Queen Elizabeth Fields