White Ermine
ID based on;
http://www.wildlifeinsight.com/british-moths/white-ermine-moth-and-caterpillar-spilosoma-lubricipeda/
http://www.pyrgus.de/Spilosoma_lubricipeda_en.html
It also has similarities to the caterpillar of Spilosoma urticae;
https://www.vlinderstichting.nl/vlinders/overzicht-vlinders/galerij-vlinder/?&vlinder=501&fase=rups
but I think is more alike S. lubricipeda.
Seen in Kasteel van Horst (July, 2019).
The White Ermine is a moth of the family Arctiidae. It is found throughout the temperate belt of Eurasia from Europe through Kazakhstan and Southern Siberia to Amur Region, China, Korea and Japan. In China several sibling species occur.