Reliability of Evidence, United kingdom

Part A, the process of securing a criminal conviction is routinely un unscientific, unpredictable and unjust (1000 words) with reference to confession evidence, to what extent do you agree with this statement.
PART B, The jury system in England and wales is fatally flawed and needs to be replace with references to research on the decision-making process on juries, and broader arguments for and against the jury system to what extent do you agree with this statement.(500 words)
Essay plan, 1.1 explain and identify a range of evidence gathering techniques.
2.1, critically examine and explain eye witness and confession evidence.
3.1, critically examine the workings of the jury systems