OK, time to post the answers for those who couldn't find the time to look them up:
Top picture left to right, all German vases:
1. Leichlingen, probably 50s-60s (we had a thread about it recently)
2. Walther "Eleganz"
3. WMF, designed by Erich Jachmann (60s)
4. WMF, designed by Erich Jachmann (60s) (we also had a thread about that very recently)
Bottom picture left to right, 5 Czech and 1 German:
1. Chribska, Josef Hospodka most likely
2. Mstisov, Frantisek Zemek "Harmony" 50s
3. Chribska (we had a thread about that one)
4. Mstisov, Hana Machovska "Romana" 60s
5. Mstisov, most likely Frantisek Zemek (we had a thread about that one. After some research I concluded that the Pallme König factory mentioned in Glasrevue with this piece was most likely the Mstisov factory, so I'd rather use that name as it was a 50s piece)
6. Beyer & Co, 60s. Located in Bayern, Germany. bOBA got it almost right, and Bayel may sound like Beyer, but it's definitely a different factory

Sadly, while Dirk and I knew the factories for all the German pieces, I for one can't name all the designers apart from Jachmann, so if anyone can add info, or correct inaccuracies, they're welcome to do so!
Astrid