I honestly don’t know. France definitely ok, however in Spain I suspect it’s a little hit and miss, much like here in Germany. In the more remote cemeteries it will be well water, and the few I saw were not labelled. (Why would they bother ...
You could try this website https://www.elcaminoconcorreos.com/en/send-bycicle
The UK is not on the list of countries they ship to but you could msg them to clarify.
This site is run by Ivar at in Santiago de Compostela.
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