.... My bet is that this used to be a *Camelot(?/similar name) shop and WEX took over that company and all its retail stores. But WEX have kept most of the staff and really just changed the name. I know this because I had several issues with Camelot in London and consequently had lengthy discussions with WEX including their senior management which they didn't speedily resolve, repeatedly making excuses that accounting infractures etc etc took time to sort out. After many months, not weeks, it was still not resolved.
* EDIT : Calumet
I used to regularly buy from WEX but will only deal with their Norwich head office and only if they have an item actually in stock. They have become too large a company to care in my opinion. It's a pity but this is not an uncommon occurrence when companies expand.
WEX let me down regarding my pre-order of the 150-400mm TC PRO so I bought one from Ffordes, a small family business in Scotland.