Talking over the MP expenses story with some friends, there seem to be two issues:
The rules for reclaiming expenses, and
The administration of the rules.
I believe that the rules are probably about right, possibly a bit generous, but basically right. The governing document makes it very clear what should, and should not, be claimed, and why.
However, I have major issues with the way in the rules were administered. Greed and maladministration have allowed MP’s to claim for items that do not fall within the rules they themselves set. Quite clearly, not only did some MP’s break their own rules, but the laws of the land as well.
This is not a modern problem, in AD130 Juvenal wrote, “Sed quis custodiet ipsos Custodes?” (But who will guard the guards themselves?).
There is no perfect system. But there is a compelling case for better independent scrutiny.