I'll tell you why. Because as a VAT registered business I stand to loose if they were not. (though they say they are). I have checked online and can't find it. It should be in the public domain (as mine is). Maybe its because their service has been excellent, their pricing also, and having had a bad stroke of luck recently I am thinking this can't be real?
Not thinking of anything else (thought not even sure what you think I could do - given any camera shop displays their VAT number online - so why would I need HDEWS specifically?) But it is the law that VAT registered companies websites should display it. They don't. Hence my nervousness. After all that is why we have such services as this (
http://ec.europa.eu/taxation_customs/vies/vatResponse.html) to check such things BEFORE we purchase.