The only one of these I've seen before is in Colchester, outside W H Smiths (which is probably good for one of them but I don't know which).
Hey, maybe Essex University has a similar Amazon locker so I can order stuff to be sent there instead of picking it up from where it's been hidden in a rainy place at home or from a neighbour I never speak to?
It turns out it does, in the middle of some student accommodation where I didn't even know there was student accommodation.
Looks as if the place in the rain and the stranger neighbour aren't off the hook, then.