Having read CWS's posts, I understand why this didn't work for my ZRH-LHR flight. BA uses 3rd party lounges at ZRH. The link in the e-mail didn't work properly, just delivering the generic chargeable page with a free trial offer.
Outbound was fine - The Guardian (YES!) and several local newspapers.
Our local library (Barnet) does not show on the pressreader hot spots map. I searched online and found this: '
Pressreader: Download the Pressreader app, sign in with your library card for free then read from thousands of newspapers and magazines from 100 countries in 60 languages. After 30 days log out and sign in again.' Looks useful. Now where's my library card?