Quote Originally Posted by Epocian View Post
The seller then broke the copyright in photocopying it and presumably selling
it to you
Not at all.

Quote Originally Posted by The Copyright Act 1988
Research and private study.
29.—(1) Fair dealing with a literary, dramatic, musical or artistic work for the purposes of research or private study does not infringe any copyright in the work or, in the case of a published edition, in the typographical arrangement.
It would be difficult to establish copyrights for a pamphet that does not identify its author, publisher, printer or date of publication.