on 15 June 2014
This book is a good reference book. It has most (but not all) current flags shown in very clear colour.
It shows the flags by Continent and then by Country.
Once found, easy to use and read. However Countries are not in Alphabetical order. I can not determine the reason of order in the book. Hence, the search is best done slowly using the Index for the Country in Question. The search in the reverse order - Flag and what country is it? relies entirely on working through the book page by page (all 240 pages) until a match is found. Not impossible but not easy either.
UK shows The Union Jack, as well as flags for England, Scotland, Wales, Isle of Man, Jersey and Guernsey. It also shows the Royal Standard. It does not show The Red Ensign, Blue Ensign White Ensign or the RAF Ensign or the special ensign used by the Royal Yacht Squadron.