Facts About the M1 Motorway
Our M1 "interesting facts" page we feature many of the interesting facts about the M1 motorway.
M1 Motorway Facts & History
The first section of the M1 opened in 1959 and the motorway was completed in 1999.
The M1 is one of the UK's busiest motorways running from London in the South to Leeds in the north of England.
The M1 is just over 194 miles long and has 48 Junctions.
In March 1972, 200 vehicles crashed north of Luton on the M1 in thick fog resulting in 9 deaths.
On 8 January 1989, 47 passengers on a Boeing 737 died when it crashed onto the embankment of the M1 whilst attempting an emergency landing at East Midlands Airport in Leicestershire.
On 6 September 1997, large sections of the northbound M1 carriageway were closed between London and Althorp, Northamptonshire to allow for the funeral procession of Diana, Princess of Wales. Police allowed pedestrians onto the normally busy M1 northbound carriageway almost the entire length of the route to pay their respects.
In 2002, a section of the M1 near Milton Keynes was cleared using mobile police roadblocks to allow for filming of the movie 28 Days Later.
On 11 December 2005, an 18 mile stretch of the M1 motorway was closed entirely during the morning following a major explosion and fire at the Buncefield Oil Depot which is less than half a mile from the M1 (We heard it and remember it well we thought a plane had crashed due to the amount of smoke covering the sky!).
In June 2007, the section of M1 between Junctions 32 and 36 was closed for a number of days after the Ulley Reservoir developed cracks after being deluged by floods.
In August 2008 part of the M1 motorway close to Tinsley Viaduct was closed to allow safe demolition of the Tinsley cooling towers.
On 15 April 2011, a seven mile stretch of the M1 was closed between Junctions 1 and 4 due to a fire at a scrap yard underneath the motorway. The road was fully re-opened early on 21 April 2011 with a 50 mph speed limit in force whilst repair work continued to an elevated section.
Search all the latest M1 traffic news →
Road closed — on the overhead signs now
National Highways’ overhead signs are showing a road closure, as at 03:47 Fri 11 Sept 2026.
M1 CLOSED AFTER J46
Time now: Friday, 11 September 2026, 03:4703:4211 Sept 2026set 4 min ago✓ Checked by us 03:47
M1 CLOSED
AFTER J46Overhead sign
On 11 signs on the M1 and M62, including M1 northbound between J41 and J42. On the signs since at least 21:56 Thu 10 Sept 2026.
We check these overhead signs at least every five minutes, but we can't guarantee a sign is still current if an incident or issue has been cleared and the sign has not been updated yet.M1 J46-J48 CLOSED
Time now: Friday, 11 September 2026, 03:4703:1611 Sept 2026set 30 min ago✓ Checked by us 03:47
M1 J46-J48
CLOSEDOverhead sign
On 3 signs on the M1, including M1 northbound within J44.
We check these overhead signs at least every five minutes, but we can't guarantee a sign is still current if an incident or issue has been cleared and the sign has not been updated yet.M6 CLOSED J4-J6 M42 CLOSED J3-J2
Time now: Friday, 11 September 2026, 03:4703:4311 Sept 2026set 3 min ago✓ Checked by us 03:47
M6 CLOSED J4-J6
M42 CLOSED J3-J2Overhead sign
On 33 signs on the M1, M6, M40, M42, M69 and A46, including M1 northbound between J18 and J19. On the signs since at least 22:26 Thu 10 Sept 2026.
We check these overhead signs at least every five minutes, but we can't guarantee a sign is still current if an incident or issue has been cleared and the sign has not been updated yet.
Latest accident or incident on the M1
The most recent accident or incident on the M1 that we are aware of.
Latest active roadworks on the M1
Roadworks live on the M1 right now.
Hard shoulder closure southbound
03:4011 Sept 2026reported 6 min ago
- Location
- M1 southbound between J22 and J21A
- Direction
- Southbound
- Lanes closed
- Hard shoulder closed
- Reason
- Maintenance work
- Schedule
- 09:00 Sun 30 Nov 2025 → 09:00 Mon 30 Nov 2026
+ 1 more active roadworks - search all M1 traffic news →
Latest planned roadworks on the M1
The next planned roadworks scheduled on the M1.
M1 Southbound Jct 6 to Jct 5 Exit Slip road Lane 3,2 closure
03:4011 Sept 2026reported 6 min ago
- Location
- M1 southbound between J6 and J5
- Direction
- Southbound
- Lanes closed
- Slip road closed
- Reason
- Roadworks
- Schedule
- 22:00 Thu 10 Sept 2026 → 05:30 Fri 11 Sept 2026
Forecast - not confirmed
+ 45 more planned roadworks - search all M1 traffic news →
Search all the latest M1 traffic news →
Updated 03:47 Fri 11 Sept 2026
Powered by National Highways’ Transport Data Feeds.