The imposition of EASA FTL in 2016 was a negative turning point for UK based crews. There was no science behind the new scheme unlike UKCAA FTL which had been refined since the 1970s only commercial pressure from a number of European based airlines to allow longer duty days with early starts.
Doctor Simon Bennett of the University of Leicester was one of those who opposed the introduction with a lot of fatigue and sleep data but was ignored.EASA had a review of the rules a few years later and the review results basically restated all of the reasons why the rules were originally thought to be unsafe but now they had two years of data to prove why the EASA rules were actually unsafe. As of today EASA have not revised the rules.