Briefly discuss the tort in Rylands v Fletcher through a discussion of the following headings: - Definition, application and purpose of the tort in Rylands - Similarities between negligence and the tort in Rylands; - Differences between negligence and the tort in Rylands - Whether there is still a need for the tort in Rylands in modern tort law. Include in this heading a brief discussion of the Supreme Court decision in Transco plc v Stockport Metropolitan Borough Council [2003] UKHL 61