Well, after the save our libraries campaign there seems to have been pretty well covered in the observer, with two articles on the event. One called Writers' anger over plans for libraries and another looking at Phhil Bradley's posters against closures Your library needs YOU!. The Telegraph had a few articles to (but not on sunday). These were Philip Pullman leads day of protests at planned closure of libraries, Top writers join National Library Action Day and Authors lead protests against library closures.
The Independent had an article called The day the bookworms turned.
The Daily Mail said nothing. The Sun had nothing (what a surprise?) The Mirror had an article entitled Authors to stage library read-ins.
So pretty good coverage really.