MyTravel usually start off the season. This year they are using their own a/c longer than they did last yr (about 2 months this yr i think) Starts end of March i believe. Even though the flight is a split with either BHX or MAN.
As far as Tom is concerned, i agree with you. However this yr it may be down to a/c charters or availability as some of the fleet is still in refurb till may.