On the other hand, we can't entirely discard to possibility of something shady going on here, Wirex is not a reputable business as Coinbase or Poloniex after all (especially the latter had to deal with a lot of account blocks).
I always thought that they were pretty well known, but I could be wrong here.
Other people have actually recommended them to me, specifically for their prepaid Bitcoin debit cards.
Again, not sure what to think here.