Ireland Supreme Court reserves judgment in drink-driving chain-of-custody appeal
A man was convicted of drink driving in January 2024 after a blood specimen taken at 00:37 on 21 August 2022 was certified by the Medical Bureau of Road Safety as containing 126ml of alcohol per 100ml of blood, more than twice the legal limit of 50ml. He received a two-year driving ban. In July 2025, Ms Justice Sara Phelan in the High Court overturned the conviction, ruling that the statutory presumption of specimen integrity did not extend to the chain of custody after the container was sealed, as the garda witness gave no direct evidence of the container's whereabouts before it was posted. The DPP appealed to the Supreme Court, which agreed to hear the case in December 2025 citing matters of general public importance. The Supreme Court reserved its judgment on 10 March 2026, with hundreds of drink-driving cases on hold pending the outcome.
- Reportednot reported
- Arrestednot reported
- Chargednot reported
- In court15 Sep
3 reports - Verdict
- Sentenced
Key facts
consolidated from all reports- What happened
- A man was convicted of drink driving after a blood specimen was certified as containing 126ml of alcohol per 100ml of blood, more than twice the legal limit of 50ml.
- When
- The blood specimen was taken at 00:37 on 21 August 2022.
- Investigation
- The garda witness did not provide direct evidence about the whereabouts of the sealed container before it was posted or who had access to it.
- Charges
- The man was convicted of drink driving in January 2024.
- Sentence
- The man received a two-year driving ban.
- In court
- The District Court refused to dismiss the case.
- In July 2025, Ms Justice Sara Phelan in the High Court overturned the conviction, ruling the statutory presumption did not extend to the chain of custody after the container was sealed.
- The DPP appealed to the Supreme Court, which agreed to hear the case in December 2025 citing matters of general public importance.
- The Supreme Court reserved its judgment on 10 March 2026.
- Other details
- The High Court ruling has led to hundreds of drink-driving cases being put on hold pending the Supreme Court outcome.
- The courts handle up to 7,000 drink-driving prosecutions annually based on blood or urine specimens.
22 statements extracted from the articles
- whatThe MBRS certified the specimen contained 126ml of alcohol per 100ml of blood, more than twice the legal limit of 50ml (irishtimes.com)
- whenThe man's blood specimen was taken at 00:37 on August 21, 2022. (irishtimes.com)
- whenThe man's blood specimen was taken at 00:37 on 21 August 2022. (irishtimes.com)
- investigationThe garda witness did not provide direct evidence about the whereabouts of the container before it was posted or who had access to it. (irishtimes.com)
- courtThe DPP is set to appeal a High Court decision affecting thousands of drink-driving prosecutions. (irishtimes.com)
- courtMs Justice Sara Phelan overturned the man's January 2024 drink-driving conviction and two-year driving ban. (irishtimes.com)
- courtThe judgment will not take effect until final orders are made in October. (irishtimes.com)
- courtThe DPP has 28 days to appeal once final orders are made. (irishtimes.com)
- courtThe District Court refused to dismiss the case at trial. (irishtimes.com)
- courtMs Justice Phelan ruled the statutory presumption did not extend to the chain of custody after the container was sealed. (irishtimes.com)
- courtThe Supreme Court agreed to hear the DPP's appeal over a ruling affecting drink-driving prosecutions. (irishtimes.com)
- courtA panel of three judges agreed to hear the appeal, citing matters of general public importance. (irishtimes.com)
- courtThe High Court ruled the statutory presumption did not extend to covering the chain of custody after the container was sealed. (irishtimes.com)
- courtThe Supreme Court reserved its judgment to a later date (irishtimes.com)
- courtThe High Court ruled that statutory presumptions did not extend to the chain of custody after the container was sealed (irishtimes.com)
- otherThe courts deal with up to 7,000 drink-driving prosecutions based on blood/urine specimens each year. (irishtimes.com)
- otherThe Medical Bureau of Road Safety certified the specimen contained 126ml of alcohol per 100ml blood, exceeding the legal limit of 50ml per 100ml. (irishtimes.com)
- otherThe Medical Bureau of Road Safety certified the specimen contained 126ml of alcohol per 100ml blood, over the legal limit of 50ml per 100ml. (irishtimes.com)
- otherThe courts deal with up to 7,000 drink-driving prosecutions annually based on blood or urine specimens. (irishtimes.com)
- otherThe High Court judgment has led to hundreds of cases being put on hold pending the Supreme Court outcome. (irishtimes.com)
- otherThe appeal concerns legal requirements for custody of blood and urine specimens before analysis by the MBRS (irishtimes.com)
- otherThe courts annually deal with up to 7,000 drink-driving prosecutions based on blood or urine specimens (irishtimes.com)
The reporting
newest first- 10 Mar2026Supreme Court urged to overturn ‘problematic’ ruling regarding drink-driving cases
Supreme Court hearing of the DPP's appeal; judgment reserved to a later date.
accused, male - 18 Dec2025Supreme Court to hear DPP appeal over ruling affecting thousands of drink driving cases
Reports that the Supreme Court has agreed to hear the DPP's appeal, and provides details of the underlying case including the chain of custody issue, the High Court's reasoning, and the broader impact on drink-driving prosecutions.
convicted, male - 15 Sep2025DPP to appeal court ruling affecting thousands of drink-driving prosecutions
Reports the DPP's intention to appeal the High Court ruling and details the chain-of-custody issue that led to the man's drink-driving conviction being overturned.
accused, male