After taking the great advice proffered here, I located an EU FRITZ!
Box Fon (Annex A) on e-bay. I purchased same, and it arrived here in
the US last night.

Unfortunately the software and documentation are all in German. I
don't read German! :-)

Can any one here help me set it up in LAN mode for UK telephone
numbers and UK standard telephones?

Some advice, a pointer to some English language software and
documentation would be great. Or better yet, is there anyone who could
send me a zipped copy of both?

Thanks guys

Adrian