I've never seen pillars labelled 1B, 2B etc. They are always designated 1/1 2/1 or E1 E2 etc in my experience. That's not to say it hasn't happened. Prior to 1992 the various 'districts' were run as pretty much autonomous businesses .
Oh I only meant cabinets. I've never seen pillars numbered like that.
...
an older one - https://goo.gl/maps/89W50
That looks exactly like a lightning-surge protector close-ish to here. Which, unhelpfully, isn't on Google maps/Street View.
Here's a disused one though. Another woodlouse/beetle-collector. I'm 99% sure it never was a PCP/Pillar. It probably got replaced with Hadleigh
PCP 9, or EO lines from the Hintlesham exchange (which now has 2 PCPs and an EO re-arrangement). Or, as I believe, was always simply a surge-protector.
Here is a double-door BT cabinet which never seems to have served anything, at least in the last ~30 years (yes, sadly, I've looked). It's not marked at all and it doesn't fit into the numbering scheme.
BT ghost cabinets: Interesting, for more than one reason.
Edited by deleted (Wed 06-May-15 00:13:15)