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I don't think so, at least I let people out and in who merge, back off if I suspect somebody wants in on the motorway, let people out of sideroad. I've no problems with turn merges etc...leave gaps at sliproads.
Just if the line is a mile long in an area with roadworks for months and somebody zooms past at 30mph to merge at the very very last moment...I get a little bit of a "queue jumping asshole" feeling...
Are you also one of those that straddle the central markings and physically block drivers who are following Highway Code guidance?