"… the predominant purpose of sentencing in cases of this nature will generally be the protection of the public. Deterrence can … carry only limited weight as a distinct aim in the sentencing of those who have travelled as passengers in a crossing such as that upon which the applicant embarked. The circumstances of those who commit offences of that kind, as opposed to those who organise them, will usually be such that they are unlikely to be deterred by the prospect of a custodial sentence if caught. … 22. … the following considerations are relevant as to culpability and harm. There is legitimate public concern about breaches or attempted breaches of border control, and this type of offence, which is prevalent, will usually result in significant profit to organised criminals engaged in people smuggling. A key feature of culpability inherent in the offence, save in very exceptional circumstances, is that the offender will know that he is trying to arrive in the UK in an unlawful manner: if it were otherwise, he would take the cheaper and safer alternative route which would be available to him. The harm inherent in this type of offence is not simply the undermining of border control but also, and importantly, the risk of death or serious injury to the offender himself and to others involved in the attempted arrival, the risk and cost to those who intercept or rescue them, and the potential for disruption of legitimate travel in a busy shipping lane. 23. Those considerations lead to the conclusion that the seriousness of this type of offence is such that the custody threshold will generally be crossed and that an appropriate sentence, taking into account the inherent features which we have mentioned but before considering any additional culpability or harm features, any aggravating and mitigating factors and any credit for a guilty plea, will be of the order of 12 months' imprisonment. 24. Culpability will be increased if the offender plays some part in the provision or operation of the means by which he seeks to arrive in the United Kingdom, for example by piloting a vessel rather than being a mere passenger; or if he involves others in the offence, particularly children; or if he is seeking to enter in order to engage in criminal activity (for example by joining a group engaged in modern slavery or trafficking). Culpability will be reduced if the offender genuinely intends to apply for asylum on grounds which are arguable."
"25. Consideration of aggravating and mitigating factors must of course be a case-specific matter, but the following may commonly arise and will call for either an upwards or downwards adjustment of the provisional sentence. The offence will be aggravated by relevant previous convictions, by a high level of planning going beyond that which is inherent in the attempt to arrive in the United Kingdom from another country, and by a history of unsuccessful applications for leave to enter or remain or for asylum. Even if the previous attempts did not involve any criminal offence, the history of previous failure makes it more serious that the offender has now resorted to an attempt to arrive without valid entry clearance."