TP-Link makes euro (240V) versions of the HS110 an KP115 (Sense compatible products) and those devices use the same basic circuit boards and devices but a different mezzanine board for the different plug types (based on tear downs on the web). I don’t remember a Euro HS300 though.
Theoretically, you should be able to use a HS110 or KP115 with 240V as long as you stay within the Euro/UK specs: