As an ATCO in the uk I find that the majority of light aircraft will use QFE for final aproach and landing as a matter of course.As to the QFE being "banned" that is news to me we have four runways each with its' own elevation...so I expect you meant to say USE of QFE
.During the night when we have the majority of our freight traffic the older aircraft all use the QFE and in fact request it upon first contact.As to whether or not it is a "better" system I as an ATCO care little...I am happy to base approaches such as surveillance radar approaches on either pressure(for me there is no mental gymnastics just a different set of figures to refer to)although the QFE figures are standard and are VERY easily memorised.All I ask is that in the event of a go around the correct levels are flown ..and as Beags says that might lead to confusion if you have a handful of big jet!(as an aside Beags did not the boys in blue go back to QNH to prevent problems caused by switching from one setting to the other as it was deemed a distraction for single seaters?)