Thanks for the speedy reply Chris.
Tbh, the more i look at them, the more i think they are two different species. Especially the smaller one, which after looking at lots of pics, i also was thinking moyeri (due to bent down appendage), as well as uluguruensis & nchiensis but they do all look very similar to me. They were actually id'd as kerstenii, wrongly obviously, though i suspected they would be. I have yet to find true Rieppoleon kerstenii in the uk & have lost count of how many i have chased around for. Only for them to turn out as something else... usually brevicaudatus.
Will see if i can get a bit more info on them & will post any if i find out.