There is a new edition of the BBI Combinatory Dictionary of English available, 24 euros for the paperback. Here is a PDF workbook which gives a good impression of the contents.
According to the John Benjamins Book Gazette, the new edition has 20% more material. It looks to me as if it has much more information on BE/AmE differences.
I had meanwhile gone over to the Oxford Collocations Dictionary. (amazon lets you look inside). That seems larger, and it has some pages summarizing differences which might be useful for foreign learners. In the middle, it also has some workbook pages it describes as ‘photocopiable’, which I suppose means free to use in class without copyright considerations.
Since I only use these books occasionally to get an idea for a verb combination, I appreciate the fact that I have found them both reliable and full.
The first edition used to be available online, but if anyone is looking for an online collocations dictionary (the search words that most frequently bring people to this site), Mark Davies’ page at Brigham Young University is the way to go.
As for German collocations, if you search for a word in DWDS, it will show you some collocations too.