[rryles]

Originally Posted by Wildie

Is that the one they quoted in the letter

It would appear so.

I see two pertinent parts:

Making of temporary copies
28A Copyright in a literary work, other than a computer program or a database, or in a dramatic, musical or artistic work, the typographical arrangement of a published edition, a sound recording or a film, is not infringed by the making of a temporary copy which is transient or incidental, which is an integral and essential part of a technological process and the sole purpose of which is to enable—
(a)
a transmission of the work in a network between third parties by an intermediary; or
(b)
a lawful use of the work;
and which has no independent economic significance.

It doesn't apply if the copyrighted work in question is a computer program. How many web pages do you think contain computer programs? <cough>javascript<cough>