OpenCycleMap Tiles in GM
In the latest iteration of specialised OSM transport-specific maps such as OpenCycleMap, it seems that anyone who wants to use these OSM tiles without having an overprint of "API Key Required" on the images needs to take out an account with http://thunderforest.com/. They grant a free api key for non-commercial use. It took me a little while to confiqure the Thunderforest server for GM but figured it in the end. In case anyone else has a problem, I attach the configuration settings.