Last week marked the 10-year anniversary of energy giant Enron filing for Chapter 11 bankruptcy. The bankruptcy, which was at the time the largest in corporate history, led to the creation of swathes of new laws designed to stop such an event happening again.

But some have questioned whether these rules have proved to be effective, with financial trickery contributing to the cause of the financial crisis of 2007. We take a look at what has been learnt from Enron and ask whether enough has been done to stop it happening again.