M25

At 117 miles, the M25 or Lon­don Orbital Motor­way is the sec­ond longest city bypass in Europe. Its radius varies from 13 to 22 miles from Char­ing Cross. Most Lon­don roads are man­aged by Trans­port for Lon­don but as part of England’s strate­gic road net­work, the M25 is man­aged by the High­ways Agency.

A Royal Com­mis­sion first sug­gested a ring road for Lon­don in 1905 but only parts of the planned road were cre­ated at that time. By the 1970s, the huge growth of motor traf­fic had led to firm Gov­ern­ment plans for what became the M25. The last 13 miles from Mick­le­field to South Mimms opened ahead of sched­ule in Octo­ber 1986 by then Prime Min­is­ter Mar­garet Thatcher.

M25 Traffic Information

On the M25 anti-clockwise between junctions J2 and J1A, minor delays are possible due to roadworks closing three lanes. Expect disruption until 5:30 am.

[View Traffic England page...]

On the M25 clockwise between junctions J19 and J21, there are currently delays of 10 mins due to roadworks closing three lanes. Expect disruption until 5:30 am.

[View Traffic England page...]

The M25 clockwise entry slip at junction J18 is closed , due to roadworks. Road expected to re-open from 5:00 am.

[View Traffic England page...]

The M25 clockwise entry slip at junction J20 is closed , due to roadworks. Road expected to re-open from 5:30 am.

[View Traffic England page...]

The M25 clockwise entry slip at junction J31 is closed , due to roadworks. Road expected to re-open from 6:00 am.

[View Traffic England page...]

M25 Road Projects

M25 Junction 20 Gade Valley Viaduct Expansion Joint Works

Work is required to replace the Gade Val­ley viaduct expan­sion joints which have reached the end of their ser­vice­able life

[View road project page...]
M25 Junctions 23 to 27 Resurfacing

We have resur­faced the sec­ond and third lanes on both car­riage­ways between junc­tions 23 and and 27.

[View road project page...]
M25 Junction 5 - 6 Resurfacing

Resur­fac­ing of the 2nd and 3rd lanes of the M25, clock­wise and anti-clockwise between junc­tions 5 and 7.

[View road project page...]
M25 Junctions 5-7

Works to make the M25 a “smart motor­way” (pre­vi­ously known as man­aged motor­ways) between junc­tions 5 and 7

[View road project page...]
M25 Junctions 23-27

We are improv­ing the M25 by mak­ing it a “smart motor­way” (pre­vi­ously known as man­aged motor­ways) between junc­tions 23 and 37.

[View road project page...]