Apple support on Twitter is for product support, so it likely won’t reach the right people. To report this site to Apple for misrepresenting themselves as an authorised reseller, use this form here.
They seem to be a relatively new company only incorporated a year ago in a very competitive market, which might explain the lack of reviews, but like I said, they are a legal entity operating in the U.K., so if they’re falsely representing themselves or a product, there is someone to sue for recourse.
It’s also possible Apple’s list of resellers is outdated or doesn’t include online-only retailers. You can always contact Apple Support directly to ask them if they are indeed an authorised reseller.
But trust is important if you’re going to conduct business with someone, so if you don’t trust them, don’t buy from them.
For what it’s worth, a lot of smaller less professional outfits can be guilty of having typos throughout their site. Even some of the larger companies have typos too.