Primary position is that position which allows you to cycle safely; on a narrow road that would be nearer the centre so as to discourage, or entirely prevent, dangerous over taking. On a wider road it means not being in the gutter; the ability of car drivers to safely overtake you is not affected. Perhaps there is confusion about what 'primary position' means. There was discussion of it here: http://www.lfgss.com/thread44004-3.html#post1667906 very recently.
Primary position is that position which allows you to cycle safely; on a narrow road that would be nearer the centre so as to discourage, or entirely prevent, dangerous over taking. On a wider road it means not being in the gutter; the ability of car drivers to safely overtake you is not affected. Perhaps there is confusion about what 'primary position' means. There was discussion of it here: http://www.lfgss.com/thread44004-3.html#post1667906 very recently.