I have found an image of the ‘living game of chess’ played to celebrate the coronation of Queen Elizabeth II in Wardown Park, Luton. It is described in detail in the following post (https://mccreadyandchess.com/2015/06/05/bedfordshire-chess-in-the-70s-its-past-and-its-future/).
Here it is, you may click on the image for a better view.












































