PS re crime and punishment - crimes of greed, eg embezzlement, non-violent burglary, theft, pick pocketing etc would be punished by restitution - they would have to pay it back, and more, by having part of their income garnisheed, even if it would take all their life. This would hit them where it hurts - ie in their wallets.
Murder and any violence would need prison, but prison should involve some sort of rehabilitation.
Drug crimes - well - I'd decriminalise the lot and supply them legally to addicts. This would ruin the drug supply business, and enable users to lead an honest life.
Social crimes like stalking would be regarded as a form of violence with the threat of prison.
All convictions without imprisonment would involve some community work, appropriate to the crime or the criminal's expertise. Eg graffiti crims would have to clean up their mess. A posh or highly educated criminal would have to do something like recording talking books, or teaching refugees English.
Oh and I'd put in a program at schools to eradicate bullying.
Hate crimes would be regarded as violence, and bother-causing hate filled clerics would be deported if not British-born, regardless of what overseas agencies said.