Short answer
Drink driving back calculation enquiries should identify the charge, specimen type, reading, stop time, test time, food and alcohol timeline, medication, expert-report status, plea stage, court date and licence impact. Legal4U cannot decide whether a back calculation is available, reliable or useful.
Quick checklist
Start with these
Collect Charge, Specimen And Timing Records
Save the charge sheet, postal requisition or summons, MG DD forms if supplied, breath, blood or urine reading, custody or roadside timeline, test times, disclosure already received, bail papers and court hearing notice.
- charge sheet
- alcohol reading
- test time
- disclosure
- hearing notice
Prepare Drinking, Food And Health Timeline
Write a factual timeline covering last drink, type and amount of alcohol, food, medication, medical conditions, sleep, travel, police stop, arrest, station arrival and specimen procedure. Keep memory-based notes separate from records.
- last drink
- food timeline
- medication
- police stop
- specimen procedure
Flag Expert, Plea And Licence Questions
Tell Legal4U whether an expert has been approached, a plea has been entered, sentencing is listed, exceptional hardship, special reasons, work impact or previous convictions may be relevant. A motoring specialist must review evidence and procedure.
- expert report
- plea stage
- sentencing date
- licence impact
- special reasons
General information only for England and Wales. Scotland and Northern Ireland need separate content checks.
Content governance
Editorial and source information
- Author
- Legal4U Editorial Team
- Professional review status
- Pending. Criminal or motoring-law solicitor, barrister or regulated specialist review required before publication as legal guidance.
- Jurisdiction
- England and Wales
- Date published
- 29 September 2026
- Regulatory status
- Legal4U is a legal enquiry intake and professional matching platform, not a law firm.
- Sources
-
- Drink-driving penalties GOV.UK.
- Sentencing guidelines: excess alcohol Sentencing Council.
- Driving offences Crown Prosecution Service.
- Editorial policy
- Legal4U guides are written to help users prepare structured enquiries. The professional-review status and reviewer details are shown separately on each guide.
- Correction process
- Corrections or update requests can be sent through the Legal4U contact page for editorial review.
- Information and advice
- This page is general information only and is not legal advice. Legal advice is provided only by an authorised professional or firm after they accept instructions.
Ask For Legal Help
Legal4U helps clients request legal help through a suitable Legal professional. The information on this page is general information only, not legal advice about your individual circumstances.
If your matter is urgent, include hearing dates, court deadlines, orders and any documents you already have when you submit your enquiry.
