I remember that there is a rare postbox somewhere on the south bank. Something to do with a king who was only on the throne for a little time, so not many were made with his mark on them, so to speak. Sorry to be A) ignorant of our glorious royals and, B) vague, but i'm sure someone can tell me where this curiousity is.
I have just searched the dusty recesses of my bookshelves - I found remaindered copies of the two volumes of the 1989 'Chatto Curiosities of the British Street' series that I picked up a decade ago during my young fogey phase - Gavin Stamp's Telephone Boxes and one on Drinking Troughs and Fountains.
Sadly, the companion Pillar Boxes volume by Jonathan Glancey (ISBN 070113447X) apparently sold out at full price to pillar box spotters and is therefore not in my library!
A quick check on Amazon sees second hand copies going for £47.95 and £49.95!