From a piece in the Telegraph comes a suggestion which deserves to be brought up more:

There is an unanswerable case for a check on all this through post-legislative scrutiny of measures to see whether they fulfil their intent. Better still, we could adopt the practice of the ancient Greek colonists at Locri Epizephyri, in what is now Italy. There, a Locrian who suggested any new law was required to make his case standing before an assembly of the people with a cord around his neck. If the law was rejected, its proposer was strangled.