I have flexibility in my hours but I am in the busiest trains in the morning usually. Flexible working is not just to miss rush hour IME, it's more than that.

I have flexibility in my hours but I am in the busiest trains in the morning usually. Flexible working is not just to miss rush hour IME, it's more than that. E.g. ability to take the odd morning/afternoon for personal reasons, or leaving an hour earlier or later than usual etc without clearing everything with your boss. Trust and personal responsibility etc. You might be thinking about offset-hours rather than flexible hours?