The way I see it, is that there was originally no time reference of 3.10am in the hand written version of Jeremy's first witness statement. If their is then Jeremy didn't suggest that time, he was not in control of what a police officer was writing down. As anybody who has ever had a witness statement made in their name by a police officer, the officer asks you questions, you answer in one way or another, and the police officer paraphrases your reply, quite often writing down something different than you actually said in your own words. It's possible that the actual time written down in the hand written version of his witness statement actually says at about 3.20am, and then whenever someone has come along to type it out that they mistook the "2" for a "1", thereby inserting the time of 3.10am, instead of 3.20am...
We would need to have sight of the original hand written statement made out in the police officers own hand writing, signed on each page by Jeremy himself. It would also be necessary to see examples of DC Clark's and DS Jones hand writing style...