Manslaughter (gross negligence)

The structured 5-step process

1. Offence category. Determine harm and culpability (usually 1-3 each) — this gives a 3×3 grid.
2. Starting point and range. The guideline specifies a starting-point sentence for each cell of the grid plus a range above and below.
3. Adjust for factors. Apply statutory and offence-specific aggravators (e.g. previous convictions, on bail, hate motivation) and mitigators (e.g. first offence, age, sole carer status).
4. Guilty-plea reduction. Up to one-third reduction for plea at first reasonable opportunity (sliding scale down to 10% if pleaded at trial).
5. Totality, ancillaries, reasons. Consider concurrent/consecutive sentences, ancillary orders (compensation, restraining, driving disqualification, victim surcharge), and give reasons.

Factors increasing seriousness

Verbatim from the Sentencing Council guideline (non-exhaustive list).

• Previous convictions
• Offence committed whilst on bail
• Offence motivated by, or demonstrating hostility based on any of the following characteristics or presumed characteristics of the victim: religion, race, disability, sexual orientation or transgender identity
• History of violence or abuse towards victim by offender (which may include coercive or controlling behaviour)
• Use of strangulation, suffocation or asphyxiation
• Involvement of others through coercion, intimidation or exploitation
• Significant mental or physical suffering caused to the deceased
• Offender ignored previous warnings
• Commission of offence whilst under the influence of alcohol or drugs
• Offence involved use of a weapon
• Other(s) put at risk of harm by the offending
• Actions after the event (including but not limited to attempts to cover up/conceal evidence)
• Investigation has been hindered and/or other(s) have suffered as a result of being falsely blamed by the offender
• Offence committed on licence or post sentence supervision or while subject to court order(s)

Factors reducing seriousness or reflecting personal mitigation

Verbatim from the Sentencing Council guideline (non-exhaustive list).

• No previous convictions or no relevant/recent convictions
• Remorse
• Attempts to assist the victim
• Self-reporting and/or co-operation with the investigation
• For reasons beyond the offender’s control, the offender lacked the necessary expertise, equipment, support or training which contributed to the negligent conduct
• For reasons beyond the offender’s control, the offender was subject to stress or pressure (including from competing or complex demands) which related to and contributed to the negligent conduct
• For reasons beyond the offender’s control, the negligent conduct occurred in circumstances where there was reduced scope for exercising usual care and competence
• The negligent conduct was compounded by the actions or omissions of others beyond the offender’s control
• Positive character and/or exemplary conduct (regardless of previous convictions)
• Serious medical conditions requiring urgent, intensive or long-term treatment
• Mental disorder or learning disability
• Age and/or lack of maturity (which may be applicable to offenders aged 18-25)
• Sole or primary carer for dependent relatives