Here is a possible response using the sources and other cases:
Source A is the Practice Statement itself issued by the House of Lords in 1966. It recognises that too rigid adherence to precedent can lead to injustice, so it allows the House of Lords to depart from its own previous decisions when it appears right to do so. However, it notes there is an 'especial need for certainty' in criminal law.
Source B is an example of the Practice Statement being used in a criminal case, R v R and G. The court overruled the previous decision of Caldwell from 1981 to consult a Law Commission report when interpreting the meaning of 'reckless' in the Criminal Damage Act 1971. This developed the law to reflect a changed