The Law Commission has published a report recommending that the legal blood alcohol limit for driving in England and Wales be reduced from 80mg to 50mg per 100ml of blood. England and Wales currently have one of the highest drink-drive limits in Europe — Scotland lowered its limit to 50mg in 2014. The Commission's report finds that reducing the limit would prevent an estimated 170 deaths and 1,200 serious injuries per year.
The report does not itself change the law — primary legislation is required to amend s.11 of the Road Traffic Act 1988. The government has responded that it will "carefully consider" the recommendations; no draft bill has yet been published. The current penalties for drink-driving remain in force: driving or attempting to drive with excess alcohol carries up to 6 months' imprisonment, an unlimited fine, and a minimum 12-month driving ban. A conviction stays on your licence for 11 years.
For existing traffic law, see the speeding fixed penalty notice guide and the penalty charge notice challenge guide. The GOV.UK drink-drive guidance sets out current penalties in full.