This is a useful source-book. The four essays are very informative, and are contributed by experts in their national glass history, (German, English, Czech and Finnish) and the period dealt with is predominantly post-war.
Jackson's essay " British Glass in Use During the 1950's extends to @ 15 pages, and is illustrated with posters for companies such as Chance, Davidson, Sherdley, Ravenhead, Has quite detailed sections on automatically blown glass, (and the distinction between Dema's one piece production and Ravenhead's two piece), Heat-resistant glass, Baxter and Stennett-Willson, lead crystal.
The book has @ 200+ illustrations, of which 180 are those items exhibited.
These include RY Goodens spiderweb service for Chance, Wliiamson's Doric for Sherdley. Certainly there are pieces, which only exist in museum collections (prototypes) and these are few and far between.
As noted previously, the international nature of glass, and import/export trading means that many of the items originating from Czechoslovakia, Finland and Germany, are just as likely to appear in the UK. That being the case, simply as an identification manual, the book is worth having.
I hope you find this useful.