I've just been to see Ai WeiWei at The Lisson Gallery. He came to my attention after taking over the Turbine Hall at the Tate Modern a few years ago. I later saw a full exhibition at The Royal Academy. It was impressive.
I would say this politically motivated activist artist is probably the most vital artist in the world today. I mean, he has been to prison for his criticism of the Chinese Government.
This exhibition has his 'Tree casts' and huge lego based images including a self-portrait.
It's a small but unmissable exhibition.
https://www.lissongallery.com/exhibitions/ai-weiwei-roots
