Introduced in 1936 the K6 telephone box is a symbol of "Englishness".
It is rumored that that virtually all telephone boxes are to be removed as so few people use them with the near universal ownership of a "mobile". Certainly it is hard to imagine today each of these eight boxes being used simultaneously although within my memory a queue waiting to use a telephone was a common sight.
Time to record them, "you don't know what you've got 'til its gone"
More detail here:
www.redphonebox.info - A History Of Telephone Boxes