my own action figures vinyl toys sculptures?
I do not know London well enough to answer this, however I have ordered a toy or two from Sam (Tesselate) at tessletoys. perhaps you could look there for ideas.
Bronze sculptures?
I like them. They are modern and tactile-looking. I would be happy to own one, and I think your uncle has a real talent.
Can you tell me some similarities and differences between these two sculptures??
Classical Greek sculptures that put emphasis on the human body as an athletic machine. Toned figures in both.