A spokesperson for the British Home Office released the statement:"The home secretary was not consulted over the decision to grant Mr Ai a one month visa. She has reviewed the case and now instructed Home Office officials to issue a full six-month visa. We have written to Mr Ai apologizing for the inconvenience caused."

wai-2_2233070b Ai Weiwei
Image via the Telegraph

The 6 month visa was refused at first as Weiwei did not declare he had a criminal conviction on his application for a UK visa. Weiwei was arrested and imprisoned by the Chinese government for 81 days in 2011, but he did not face a criminal conviction.

ai-weiwei-uk-visa Photograph of the initially issued 20 day visa
Image via Instagram/Ai Weiwei

Weiwei will travel to the UK in September for the opening of his solo show at the Royal Academy.