London, May 30th. The talks by Liz James and Bente Kiilerich look to be very interesting.

http://www.courtauld.ac.uk/researchforum/MosaicsofThessalonikiRevisited.shtml

And here's the book, 98 euros (English and Greek versions) which is about standard for publications like this;

http://www.kaponeditions.gr/archeology-byzantium-mosaics-thessaloniki-p-77.html