Nooooooooooooooooo! Don't start this one up again!
The conclusion last time was that if you anyway interfered with the progress of middle lane hoggers, tried to point out the error of their ways or heaven forbid, commit the unholy sin of undertaking them you would be burned in the fires of hell for evermore.
I think the thinking was that you should sit behind them (observing the 2-second rule) until they realise the error of their ways and move over. You are allowed from your 2-second gap to make an 'unaggressive' flash of your lights to alert them to your presence, although no definition was given as to what constituted an 'unaggressive' flash.
For a couple of weeks after the last thread about this, I tried the whole 'sit back & flash your lights' method and it didn't work once.
I also sat behind people to see how long they would stay in their own little world before realising others wanted to pass them (in a legal manner) and the longest I measured was 10 miles; in general it was a couple of miles although there were several people who hung on for 5-6 miles.
This morning I had blokie in outside lane in front of me doing about 65mph between two roundabouts about 2 miles apart. Wouldn't move over. After second roundabout, he then sat at 65mph before going up to 70, then 80mph (and maybe even a bit more). I could tell he didn't want to go faster than the 65 he was doing as he was very hesitant, but he just didn't want me to overtake him. Eventually I got to my turning & pulled into the inside lane, whereupon he immediately slowed down to the 65mph he had been doing earlier.
I won't mention what car he was driving……