I didn't get any shocking surprise when i came to graduate. I got a couple threatening letters (they wrote to the DVLA and got my name and address from my numberplate), then they called me up and asked if they should put the charges (7 parking tickets) on my student account and i told them no, as, although i am the registered keeper, i wasn't the driver of the car.
They then tried to tell me that the registered keeper is responsible for parking tickets and politely told them they were wrong - it is the driver at the time that the alleged offence occured. They then asked for the driver details and i said i didn't know who was driving that day. Then they said they would write off the tickets.
Win.
That's because they didn't bother in your case, our university and many others certainly does bother. If you can't provide the driver details, then you as the registered keeper would receive the fine by default.
Based on your logic, you could use the same trick to blag your way out of any lovely letters you receive in the post for speeding/any other offences. Which I quite doubt you can.
