You will probably get a letter in a few weeks from Greater Anglia stating that they are considering prosecution but asking for your version of events. The best thing you can do is write a short, concise letter apologising for what happened and saying that you are willing to pay the outstanding fare due plus their administrative costs in dealing with the issue. Hopefully they will agree to a settlement which will keep the matter out of court.
One potential issue you have is what the inspector has written. There's nothing you can do about that at the moment, you'll need to wait for the letter to arrive.
One potential issue you have is what the inspector has written. There's nothing you can do about that at the moment, you'll need to wait for the letter to arrive.