There seems to be a proliferation of old motorways turning into “smart” motorways. Lots of investment being done down here on widening and junction improvements. Doesn’t stop middle lane joggers nor truckies overtaking at 57mph in the middle lane taking 3 miles to complete the manoeuvre.
As far a speed cameras, the M25 ones are on over near Clackett, two blokes form work got done doing 83 & 87 in the section going east just before the M25 offshoot before the M20.
Happy that the inner lane (hard shoulder) is now being modified to be used during rush hour/congestion, seems logical to me.