I’ve put together a page at Saratoga-Weather.org - GRLevelX placefiles and scripts which lists all the currently available GRLevelX placefiles I offer from my website. There are also links to the sources on GitHub in case you would like to run one or more of the scripts on your personal site.
Enjoy!
It would be great if we could get these to work in the UK. I have tried and failed 
The underlying data is for US based (Nexrad) radar sites so it’s not useful in the UK.
Very true, the GRLevelX programs are really for the USA as the radar sources are all from NOAA NWS.
Sorry that there isn’t an equivalent for other parts of the world. I do note that some of the state weather services are quite protective of their data (radar images included) so I understand why the GRLevelX folks have limited their scope to the public domain NWS products.