Here we have a massive leak and a treasure trove of information for UK payphone enthusiasts. Below is an embed of the very document (can be found at this link also https://drive.google.com/file/d/1j2qnzfpEPKbMXZITfEQhFuTn5n6taac4/view?usp=sharing and is searchable using ctrl + f).
It comes after being officially denied access to the contained information in a series of emails by myself with a BT official named Paul Jordan.
It is a great honour to be in possession of this information and to be able to share it with interested parties. Especially when outlets such as Nick Mutton's http://www.ukpayphone.com/ whom charge for this (although be it with additional information).
Please send in your payphone numbers and pictures. Visit this link for more info, it's easy.