Don't know where you are but oftentimes you can hop between EU Amazon stores just by changing the domain name (the country part) on the URL. Like so: https://www.amazon.de/Wahl-Super-Micro-Mains-Clipper/dp/B0060JFENI

Also, the UK version might already include an adapter and if not you can buy them in many generic stores for cheap. It's not a stepdown/up converter, it's literally just routing the pins to fit the plug.