NHS email encryption

[Roland Perry]

In article <46D80FAF.30565.DDA1D2@davidh.spidacom.co.uk>, David Hansen 
<davidh@spidacom.co.uk> writes
>> They might be doing a study of people living within a certain distance
>> of some $natural_hazard.
>
>For most of the population of the UK I'm not convinced that any study
>would be that more useful with the whole of the postcode, compared to
>just the first part of the postcode.

I was thinking of Supergrid lines, where a few hundred yards might make 
a difference.
-- 
Roland Perry