"Dear Mr Bradley,
"The information relating to historical data on operator codes and functions, originally requested in December 1993, is still required as David feels it is a vital point of evidence. As I understand it, the passwords used are believed to have been accessed through the system. In order to do this an original entry must have been made and the audit record will show exactly whose code this was made under. Given the seriousness of the accusation, I consider that documentary evidence of these actions is vital and must cover the whole period concerned. If you wish to ensure a fair hearing is conducted, you must surely allow David to call whatever evidence he feels is essential to his defence and to ask him to justify a request for evidence, the purpose of which must be as clear to you as it is to him, is both irrational and unreasonable."