“Having regard to the case law, we identify the following factors which may be relevant to the decision as to what reduction is appropriate in a particular case: i) the quality and quantity of the information provided, including whether it related to trivial or to serious offences (the risk to the informer generally being greater when the criminality concerned is more serious); ii) the period of time over which the information was provided; iii) whether it assisted the authorities to bring to justice persons who would not otherwise have been brought to justice, or to prevent or disrupt the commission of serious crime, or to recover property; iv) the degree of assistance which was provided, including whether the informer gave, or was willing to give, evidence confirming the information he had provided; v) the degree of risk to which the informer has exposed himself and his family by providing the information or assistance; vi) the nature and extent of the crime in which the informer has himself been involved, and the extent to which he has been prepared to admit the full extent of his criminality; vii) whether the informer has relied on the same provision of information and assistance when being sentenced on a previous occasion, or when making an application to the Parole Board: in our view, an informer can generally only expect to receive credit once for past information or assistance, and for that reason the text should where applicable state whether particular information and assistance has been taken into account in imposing a previous sentence; viii) whether the informer has been paid for the assistance he has provided, and if so, how much; but it is important to note that in T at [8] the court emphasised that a financial reward and a reduction in sentence are complementary means of showing offenders that it is worth their while to disclose the criminal activities of others: a financial reward, unless exceptionally generous, should therefore play only a small, if any, part in the sentencer’s decision.”
“In R v A and B[1999] 1 Cr App R (S) 52 , Lord Bingham CJ observed that those who help in the investigation of crime can expect a discount depending on the value of the help given, and similarly if a defendant exposes himself or his family to personal jeopardy, that will be suitably recognised. In R v Yvan Nshuti[2012] EWCA Crim 1530 the court observed at paragraph 7: ‘In addition to the submissions which have been made to us both in writing and orally by Mr Murray, we have considered a number of authorities, in particular King[1985] 7 Cr App R (S) 227 , Wood[1997] 1 Cr App R (S) 347 , P & Blackburn [2008] 2 Cr App (S) 5, from which we distil the following principles: first, the assistance should be valued and discounted from the starting point before credit is given for a plea of guilty; second, the overriding principle is one of totality, namely that the sentence when reduced should reflect fully the value of the assistance and credit for a plea; third, the total credit available will generally be between 50 and 66 per cent, with the greatest credit being served for the maximum assistance and in particular those who put themselves at most risk for so acting.’” ‘In addition to the submissions which have been made to us both in writing and orally by Mr Murray, we have considered a number of authorities, in particular King[1985] 7 Cr App R (S) 227 , Wood[1997] 1 Cr App R (S) 347 , P & Blackburn [2008] 2 Cr App (S) 5, from which we distil the following principles: first, the assistance should be valued and discounted from the starting point before credit is given for a plea of guilty; second, the overriding principle is one of totality, namely that the sentence when reduced should reflect fully the value of the assistance and credit for a plea; third, the total credit available will generally be between 50 and 66 per cent, with the greatest credit being served for the maximum assistance and in particular those who put themselves at most risk for so acting.’”