Date   : Wed, 16 Sep 2009 10:40:53 +0100
From   : joel@... (Joel Rowbottom)
Subject: Domesday Submission Pack

And yet further:

The accompanying letter has scribbled on it: "Map block numbers: (1) 0336 
0138 (2) 0336 0135" so maybe that'll get you past grid ref.

These discs came from King Alfred School, ID number 3300060.

It says "Micro: BBC Model B, Storage: Cassette" - I wonder if there were 
packs for other platforms?