Photo: Lisa Fotios / Pexels. Illustrative photograph.
England, Scotland and Wales share one Highway Code, one driving licence and the same theory and practical tests, but a handful of rules differ. The biggest are Wales’s default 20 mph limit on restricted roads, Scotland’s lower drink-drive limit, Scotland’s national pavement parking ban, and city emissions zones that work differently in each nation. This guide sets out the differences learners and new drivers in Great Britain need to know before driving across the borders.
The differences at a glance
| Rule | England | Scotland | Wales |
|---|---|---|---|
| Default limit on restricted roads (usually street-lit built-up roads) | 30 mph | 30 mph | 20 mph since September 2023 |
| Drink-drive limit (breath) | 35 micrograms per 100 ml | 22 micrograms per 100 ml | 35 micrograms per 100 ml |
| National pavement parking ban | Banned in London; elsewhere the Highway Code says you should not, unless signs permit | Banned nationally, enforceable since 11 December 2023 | Highway Code says you should not, unless signs permit |
| City emissions zones | Clean Air Zones and London’s ULEZ | Low Emission Zones in Glasgow, Dundee, Aberdeen and Edinburgh | None listed on GOV.UK’s Clean Air Zone service |
| Learner plates | L plates | L plates | L or D plates |
| Theory test audio | English or Welsh | English or Welsh | English or Welsh |
Wales: the default 20 mph limit
Since September 2023, the default speed limit on restricted roads in Wales has been 20 mph instead of 30 mph. Restricted roads are usually residential or built-up roads with street lights, generally no more than 200 yards apart.
- Not every lit road is 20 mph. Councils and the trunk road agents can keep or return roads to 30 mph using Welsh Government guidance, which was revised in July 2024. Changing a limit needs a traffic regulation order, which takes several months.
- No 20 mph repeater signs. Because 20 mph is now the default, the Welsh Government says repeater signs are no longer used. If you see street lights and no other limit sign, assume 20 mph.
- Look for 30 mph signs. A road kept at 30 mph has signs telling you so.
- Limits keep changing. Roads are still being reviewed, so read the signs rather than relying on memory or an out-of-date sat nav.
For limits across Great Britain, see UK speed limits.
Scotland: the lower drink-drive limit
| Measure | England and Wales | Scotland |
|---|---|---|
| Breath (micrograms per 100 ml) | 35 | 22 |
| Blood (milligrams per 100 ml) | 80 | 50 |
| Urine (milligrams per 100 ml) | 107 | 67 |
There is no safe amount you can drink and know you are under either limit. The only safe choice is not to drink at all if you are driving, including the morning after. See drink and drug driving limits.
Scotland: pavement, double and dropped kerb parking
Councils in Scotland can enforce three bans from 11 December 2023:
- Pavement parking: parking with any wheels on the pavement.
- Double parking: parking more than 50 centimetres from the edge of the road.
- Dropped kerb parking: parking across a dropped kerb.
The penalty is £100, reduced to £50 if paid within 14 days. Councils can designate certain exemptions in their area. Highway Code Rule 244 says you MUST NOT park partially or wholly on the pavement in London or Scotland, and should not do so elsewhere unless signs permit it. See where not to park.
Emissions zones in each nation
England
GOV.UK lists Clean Air Zones in Bath, Birmingham, Bradford, Bristol, Portsmouth, Sheffield and Tyneside (Newcastle and Gateshead). Which vehicles have to pay depends on the zone, so check your car on GOV.UK before you go. London has its own Ultra Low Emission Zone (ULEZ) and Congestion Charge, run by Transport for London.
Scotland
Low Emission Zones are enforced in Glasgow (from 1 June 2023), Dundee (from 30 May 2024), and Aberdeen and Edinburgh (from 1 June 2024). They work differently from England’s zones: there is no daily charge to pay. A non-compliant vehicle that enters gets a penalty charge, which rises for repeat contraventions. The minimum standards are generally Euro 4 for petrol and Euro 6 for diesel. Check the current penalty and exemptions on the Scottish Government’s Low Emission Zones site.
Wales
GOV.UK’s Clean Air Zone service does not list any zones in Wales.
How to check and pay in every zone: ULEZ, Clean Air Zones, Congestion Charge and Dart Charge.
Wales: bilingual signs and D plates
- Bilingual signs. Many road signs in Wales show Welsh and English. The shapes, colours and symbols are the same as elsewhere in Great Britain, so read the symbol first. See road signs.
- D plates. Learners in Wales can display D plates (for “dysgwr”, learner) or L plates. Outside Wales, use L plates.
- Welsh-language theory test audio is available for the theory test, wherever in Great Britain you sit it.
What stays the same across Great Britain
- The Highway Code, including the hierarchy of road users.
- Your licence, provisional rules and supervisor rules.
- The theory test and practical test, run by DVSA.
- The national speed limits on single and dual carriageways and motorways.
- Penalty points and the New Drivers Act.
Northern Ireland is part of the UK but has its own rules and agencies. See Northern Ireland vs GB Highway Code differences.
Common questions
Is the speed limit 20 mph everywhere in Wales?
No. 20 mph is the default on restricted roads, usually street-lit built-up roads. Some of those roads are signed at 30 mph, and other roads keep their own limits.
Does the Scottish drink-drive limit apply to English drivers?
Yes. The limit depends on where you are driving, not where your licence was issued.
Can I park on the pavement in England?
Not in London, where the Highway Code says you MUST NOT, except in limited circumstances. Elsewhere in England it says you should not, unless signs permit it.
Do I need to pay to drive into Glasgow or Edinburgh?
There is no daily charge. If your vehicle does not meet the Low Emission Zone standards, you must not drive it into the zone, or you face a penalty charge.
Is the driving test different in Scotland or Wales?
No. The same DVSA test runs across Great Britain.
Can I use D plates in England?
D plates are a Welsh option. Outside Wales, display L plates.
Back to the full guide to learning to drive in Great Britain.
Sources
- Welsh Government, “Introducing default 20mph speed limits” (gov.wales)
- GOV.UK, “The drink drive limit” (gov.uk)
- Transport Scotland, “Pavement parking ban” (transport.gov.scot)
- Transport Scotland, “Parking and the Transport (Scotland) Act 2019” (transport.gov.scot)
- Transport Scotland, “Low Emission Zones introduced across Scotland” (transport.gov.scot)
- GOV.UK, “Driving in a clean air zone” (gov.uk)
- GOV.UK, “The Highway Code: Waiting and parking (238 to 252)”, Rule 244 (gov.uk)
- GOV.UK, “The Highway Code: Annex 2. Motorcycle licence requirements” (gov.uk)
- GOV.UK, “Theory test: if you have a reading difficulty, disability or health condition” (gov.uk)










