[UK-CONTEST] RSGB 3 letter UK county codes

[Alan Jubb - 5B4AHJ]

Hi all
Does anyone have a list of the RSGB 3 letter county codes that were used in
the period 1997-2003 (possibly before/after also).
I found a list on the web, but it seems incomplete as it doesn't include PEM
or TAU.

I assume that PEM is Pembrokeshire, can anyone confirm please?
I have no idea what TAU might be.

Thanks
73
Alan 5B4AHJ