Yeah been down the M50 a few times and never registered or paid a thing.
Your right though, as soon as I cross the border back into NI the cruise control is knocked back a bit lol.
I also never slow down for that fixed camera (grey one with lines painted on the road) on the way down the M1 towards Dublin. Doesnt matter what speed you pass it at it never flashes...lol
It does and has flashed me in the past.
Not willing to divulge what speed I was doing but I never heard anything back from it.