How has the law been amended to prevent the miscarriage from reoccurring today?

Research case from below. Incorporating all of the points listed below, write an essay in the form of a case study:

In order to answer the question fully, you will need to include:

A definition of ‘miscarriage of justice’;

A summary of the facts of the case;

An explanation of the point during the Criminal Justice System that the miscarriage of justice occurred;