Steve Fitzgerald wrote:
In message , John Salmon
writes

As a matter of interest, where did 'IG' come from? In my view, its
derivation is the least obvious of all the postcodes. I can work out
all the other slightly obscure ones e.g. SP=Salisbury Plain,
DG=Dumfries & Galloway etc., but the only suggestion I've ever heard
for IG is Ilford & Gants Hill, which seems unlikely.

I always understood it was linked to Ingatestone as being in the
middle (roughly) of the area.

Ingatestone is in the CM area, and the RM area is (mostly) between CM and
IG.

I've always thought IG meant "Ilford and barkinG". I have no evidence for
that.