Do we think this is a new item? (the polystyrene insert suggests it might be brand new??)
I wonder if a migrant from the USA brought this with them and found *shock horror* that UK voltage isn't compatible??
I have heard of similar happening here - particularly US Military personnel have come to work on a base in Australia, US military paid for all their possessions to be shipped here, when they got here, every damn electrical item didn't work...
Also I have a distant relative who ordered a microwave oven online (because it was a particular colour!!) without checking it was correct voltage. it was Daewoo microwave oven made in China for the USA market. When it arrived, they noticed the US plug didn't fit, so just used a plug adapter and plugged the US spec 110V microwave oven into Aussie 240V. Instant dead, brand new microwave oven. It had major electronics damage. I was asked if I could resurrect it, but I couldn't find an equivalent 240V model to do a conversion, in the end the brand new micro went to scrap metal.