I've noticed this in the UK in the last couple of weeks... Normally a "next-day" package would be delivered by a number of different UK courier/delivery firms

I've noticed this in the UK in the last couple of weeks... Normally a "next-day" package would be delivered by a number of different UK courier/delivery firms (Royal Mail/DPD/Yodel/etc.). Nearly everyday, we've had deliveries to our office from unmarked white vans. I know this because our office is hard to find, and they generally phone me to say they can't locate us. Whenever I've gone outside to meet the delivery driver, I've seen the van full of Amazon packages and asked if he does deliveries for anyone else. They've have told me they "only" deliver for Amazon and won't really be pushed on the matter. I think pretty soon those vans are going to have Amazon branding on them and a few courier companies will be wondering where their business went...