M1 Junction 4: Brockley (A5, A41, A411, A5183)
Junction 4 at Brockley Hill serves Edgware, Elstree and Stanmore, with the A41 and the A5 running close by. Edgware is a little under two miles south-east. Bentley Priory Museum, the Battle of Britain headquarters, is about a mile and a half south-west, and Stanmore station about a mile south. London Gateway Services sits about two miles back towards London.
For Edgware, Elstree and Stanmore, whether you live there, work at the studios or are calling on a customer, Junction 4 is the local way on to the M1.
Check this junction now: live M1 speed flow map · latest M1 traffic news · M1 serious incidents · M1 accidents
M1 Junction 4 Now: Accidents, Incidents and Roadworks
Live traffic news at M1 Junction 4
Incidents and roadworks between Junction 3 and Junction 5 that we are aware of.
M1 northbound Approach to Jct 6 lane 3 and 2 closure
21:50 (9:50pm)21 Oct 2026reported 6 min ago
- Location
- M1 northbound between J5 and J6
- Direction
- Northbound
- Lanes closed
- Lane closures
- Reason
- Roadworks
- Schedule
- 22:00 (10pm) Wed 21 Oct 2026 → 05:00 (5am) Thu 22 Oct 2026
Forecast - not confirmed
+ 1 more near Junction 4 - see all the M1 traffic news →
This is the news for Junction 4 only, not the whole M1. For the rest of the motorway see all the latest M1 traffic news, the overhead signs and the speed limits in force now.
Updated 21:57 (9:57pm) Wed 21 Oct 2026
Live Traffic Speeds at M1 Junction 4
The speed strip below shows the M1 around this junction, both directions, from National Highways’ live data, checked every five minutes.
Untick all three to see just the speeds. We show the important overhead signs and the mandatory speed limits (red ring); see every overhead sign.
Go to our live M1 traffic speed flow map ›
NOTE: The speed flow, overhead sign messages or other information shown on our live traffic speed flow map is updated every few minutes. We cross check the data and aim to provide warnings if there could be a delay or an inaccurate speed reading. There can be occasions, beyond our control, and despite our best efforts where the speed flow could be inaccurate. We cannot therefore guarantee the speed you can expect on any stretch of the motorway is always accurately shown. However we hope you will find our live traffic speed flow map a useful tool in trying to plan your journey. Safe driving.
All the latest M1 traffic news →Live M1 traffic speed flow map →
M1 J4 in Our Records
No accidents, breakdowns or obstructions at J4 have reached us in the last 13 days. In both directions, traffic usually keeps close to its typical speed through the day.
Average speed by hour of day at J4
Northbound
Southbound
Incidents per week at J4
Built from our own records of National Highways’ live data for the M1 either side of J4: speeds from 13 days of five-minute readings, incidents from the last 13 days (we started recording incidents on 09/10/2026). Each incident is counted once. Updated every five minutes.
- Junction M1 J4, Brockley
- Roads at this junction A5, A41, A411, A5183
- Nearest town Edgware, 1.8 miles south-east
- Junction before J2, Five Ways Corner, about 3.7 miles in a straight line
- Junction after J5, Berrygrove, about 3.6 miles in a straight line
Around M1 Junction 4: Brockley: Towns and Places on the Map
| Place | What it is | From the junction |
|---|---|---|
| Lambs | Attraction | About 1 mile north-west |
| Stanmore | Railway station | About 1 mile south |
| Bentley Priory Museum | Attraction | About 1.5 miles south-west |
| Hilfield Castle | Historic house or castle | About 1.5 miles north-west |
| London Gateway Services | Motorway services | About 2 miles east |
| Canons Park | Railway station | About 2 miles south |
| Meadow Park | Venue | About 2.5 miles north-east |
| The Hive Stadium | Venue | About 2.5 miles south |
