Amazon seem to have agreed a contract to site their lockers at as many Northern stations as possible, presumably providing the TOC with payment for that position. The first was installed at Dore & Totley a fortnight ago and it's being used. As far as I can tell all the lockers will have names, like Eddie Stobarts's trucks. This one can be identified as Amazon Locker Peak. (The local Morrison's has a box, Amazon Locker Carrots.) Who knows, Platform 5 or similar may start publishing spotter's books to record these boxes!