Martin Rootes, of MA3 release fame, has got them off the original cassettes and made videos of BBC Micro generated graphics. See this video of Texture and Pattern:
Category: art
New video Piano Bar generative computational graphics MA2
This is from datacassette MA2: Piano Bar (red) by Geoff Davis 1984.
For more details see the MA2 Various Unusual Events page.
Video of computer generated art MA1:1 Abstract Originals 1984
Another video this time of MA1 ‘Abstract Originals’:1
The first generated art on MA1 Geoff Davis ‘Abstract Originals’.
No sound.