Alright guys, here's what happened today...
On a dual carriageway, national speed limit, there are roadworks.
A contraflow is in force, and a temporary 40 limit.
At the end of the contraflow, cones end and signs indicate end of roadworks, but then, nothing else. No signs tell us that national speed limit is reapplied.
So, like everyone else, I assume the road is back to normal, and proceed to overtake an HGV.
Then, the camera van in a layby. Saw the van half a mile off and anchored back down to 40, so I think I was OK, but the HGV driver didn't see it as quick and gave me a hoot for braking as soon as I pulled back in front of him... sorry mate!
So does close of roadworks automatically mean NSL is reapplied? Or should I have waited until the next reminder NSL sign (about 4 miles further on?)