An Early Day Motion (EDM) is a bit of parliamentary fun - they don't really mean or do anything but they do serve as a pointer of which issues MPs are interested in. Hence you can find them from the serious political messages through to congratulating your local football team. They require no more energy than your signature but they do send a message about your interests.
We all know that Ministers do not sign them, so why since being granted the freedom of the backbenches, hasn't Mr Clarke signed a single one? Clinching evidence that he has no interest in anything, anyone and certainly not Norwich.