Police control of classified information

[Roland Perry]

In article <20090411201824.11596ikfurcz7604@webmail01.purplecloud.com>, 
signup@bealoid.co.uk writes
>> While many people are understandably baying for blood, I can see why 
>>people can become too comfortable with the idea of stepping from an 
>>official car (no doubt reassuringly expensive) into an official 
>>building, inside a highly protected cordon, but while clutching 
>>something with protective marking.
>
>The fact it left his *room*, let alone the building, without being 
>secured is the bad thing.  Sure, all staff in the building might be 
>vetted, but that doesn't mean you want them being able to read SECRET 
>documents.

Do the famous ministerial red boxes ever contain material that's SECRET? 
What would be a suitably secure way to carry SECRET papers around inside 
an otherwise secure building like No10 - a genuine question.

(Yes, I know the incident was outside, but we have to start somewhere).
-- 
Roland Perry