From February 15th this year, some of the cameras were converted to digital instead of film. The speed at which they catch people will also drop from 90 to 79.
I'm not convinced they're catching people yet though.
I've been driving from the M23 to junction 14 for 3 years now. Up until 3 or 4 weeks ago I had never seen them flash.
Now I see them flash daily. I've noticed people's driving habits have changed to. Drivers brake and slow down before going through them now.
The cameras that flash are newer...