In August 2005, in a letter asking the Home Secretary to pardon him, Bamber's lawyers wrote that there were four million documents in the case, one quarter of which had not been disclosed to the defence.
There were four million documents in the case. Bamber's lawyers wrote this. This was in August 2005. This was in a letter. This letter was asking the Home Secretary. This was to pardon him. The case was one quarter of which had not been disclosed to the defence.