The binding legal principles established are: (1) For minor, non-serious offences, courts must seriously consider and prefer non-custodial sentences such as fines and community service, with imprisonment being a last resort that requires special justification; (2) Where a court departs from recommendations in a pre-sentence report, it must provide reasons for doing so; (3) Public bodies, including Provincial Police Commands and Provincial Judicial Committees, can only validly exercise powers within the limits conferred on them by statute or common law - decisions made outside those powers are ultra vires and unlawful; (4) The practice of police referring mobile phone use while driving offences to court (rather than issuing administrative fines) was unlawful as it arose from an ultra vires decision by bodies without legislative authority; (5) The appropriate penalty for contravening section 16B(1)(a) of SI 299/2002 (use of mobile phone while driving) is governed by section 81(5) of the Road Traffic Act, which provides for a maximum fine of level 5 (US$200) or imprisonment for six months or both; (6) Police should issue tickets for fines in accordance with level 5 for mobile phone offences, and should only refer offenders to court where they are repeat offenders or the circumstances are aggravated; (7) Trial courts must give reasons for imposing custodial sentences, particularly where non-custodial alternatives are available and appropriate.