Excl: Young knife crime offenders should be forced to do national service, says 'citizens panel' held by @PRTuk to assess the public's attitudes to sentencing.

It also found that the public wants to see offenders punished with more visible community orders:
https://www.thetimes.com/uk/law/article/young-people-knife-crimes-national-service-poll-survey-wcclm0zrz