You'd need to combine ___location (possession at school, or in prison, or at a place where there is serious public disorder) or effect caused (causes serious alarm or distress), and also intent (crime based on hostility to religion, race, disability, sexual orientation or transgender identity of the victim), or the blade would need to be a "highly dangerous weapon" (ie, not a swiss army knife).
Carrying a swiss army knife, and not having a good reason to do so, would be culpability D and harm 2, and so the sentence at mags would be a band C fine (about 1 week of your pay) or a medium level community order.
You couldn't.
That sentence is the maximum possible available for a particular type of offence.
https://www.sentencingcouncil.org.uk/offences/magistrates-co...
You'd need to combine ___location (possession at school, or in prison, or at a place where there is serious public disorder) or effect caused (causes serious alarm or distress), and also intent (crime based on hostility to religion, race, disability, sexual orientation or transgender identity of the victim), or the blade would need to be a "highly dangerous weapon" (ie, not a swiss army knife).
Carrying a swiss army knife, and not having a good reason to do so, would be culpability D and harm 2, and so the sentence at mags would be a band C fine (about 1 week of your pay) or a medium level community order.