Very impressive collection! Including all these beautifully painted moors! And big thanks for sharing a photo of Medbury' medieval prints - I'm convincing a friend of mine to start an Age of Chivalry project with me, and while he's more towards printed models now, such photos work like a great ad!
Also a few words on Antediluvian's scale - it's not a matter of time the models were made, it's because Paul Hicks is known for making models on a smaller side of a scale, while many other sculptors already do bigger miniatures for a while (in case of Antediluvian it's very talented Matthew Bickley who made the more recent models for them, while initially they've bought some Hick's masters from Claymore Castings to start their historicals range).
Long story short - Paul Hicks miniatures, no matter when and where they were done, are great models on their own, but rarely compatible with any other range in scale, almost always ending up being on a smaller side of things. Other examples of his work - Baron's War metals from Footsore, many ranges at Empress or various AWI and Napoleonic Wars from Brigade Games. All small and look best while used alongside their own.
Gripping Beast (newer sculpt)
and that's in fact an old sculpt from Front Rank.

Gripping Beast just bought them recently, like a couple years ago.
Sorry for all this 'Actually,..' sort of stuff about scale differences! Cheers!