Ai Weiwei's hopes to visit London

Chinese artist Ai Weiwei has spoken of his hopes to travel to London to see the sunken pavilion he has designed for the 2012 Festival.

He is currently banned from leaving Beijing and has been working with his architectural partners via Skype.

He told BBC Newsnight about his life under house arrest, where all his activities are regulated but through special technology he is still able to get on Twitter to communicate with his followers.

The full interview will be on Newsnight on Friday 1 June at 22:30 on BBC Two.