While the comparisons with Jet2 are being discussed, I think a comparionson between the ACMI carriers and operations used by the two needs to be mentioned.
The 3 AirExplore frames working for Jet2 at EMA have not had a single sector land more than 45 minutes after scheduled in the last week.
The 2 smartwings frams at BHX have 1 late sector in the last week between them.
The 2 Airtankers and 1 World2Fly at MAN have had 1 sector in the past week land an hour late.
The 2 Titans at STN have been late twice.
Meanwhile just look at the flight records of any TUI ACMI frame and it'll be full of late departures and arrivals, cancelled flights and tech issues.
All aircraft being used by LS (except the World2Fly A330 which has avery comfortable interior anyway) are fitted out with the jet2 cabin, basic Jet2 livery, and are fully crewed by Jet2 staff in passenger facing roles (with ACMI carrier crew in the flightdeck). To the layman, the experience and product provided is virtualy indistiguishable, and typically reliable. The carriers chosen by LS to provide flights on their behalf are clearly of a much better standard, and a little bit of extra investment from LS to put their own award winning product and bodies on board the aircraft will pay off 10 fold with happy customers returning, while TUIs will be more likely put off.