If we are to believe that No.6 and No.1 are the alter ego of the same person, and that No.1 has been in charge of the Village all the time, then each No.2 who has spoken to No.1 on the telephone, every No.2 who has heard No.1's voice, must surely know the identity of No.1. No.2 of Free For All for example, he informs No.6, that if he wins the electionNo.1 may no longer be a mystery, if he sees what No.2 means. Does this mean that No.2 knows who No.1 is, and that he is No.6 himself? Fictional wise, its quite feasible that No.2 put two and two together, after recognising No.1's voice on the telephone. Besides which, towards the end of the episode, as the new No.2, the former No.6, is about to take up Office, No.2 advises him that if he wants to know anything, just press a button 'You're the boss!'
Be seeing you