If the item draws relatively little current then an adaptor is the only way to supply power to it through the original plug, although the EU plug's prongs can usually be inserted into a UK socket and I used a lamp like that for at least two ecades. The UK has saddled itself with a monstrosity of a plug/socket combination, the only one where I have ever come across a socket developing a short circuit (at least two separate ones in two separate properties). Like so much else, in the UK it is the World's best but again as per usual it is not that good outside the UK (only UK dominated, militarily/administratively or culturally, foreign territories use them). That said, the set is what it is and one must live with it in the UK.