These testers are from Heroics and Ros. They are nice miniatures especially the ones with explosive reactive armour. However I don't think the proportions are quite right, see http://paradegroundworkshop.blogspot.co.uk/2015/10/heroics-and-rosscotia-grendal-afvs.html for more information.
These are Scotia Grendel I found these are generally better proportioned and had a bit more detailed. However the link above shows that comparisons between these manufacturers need to be taken on a case by case basis.
Overall these were a nice distraction from the Punic War project and the next few posts show what I was working on over the winter months. There isn't too much more to say with these and the following posts so I will probably pop a few scans on and not much text.