Regarding the above, as ScouseG mentioned my main gripe was that the time change does not (as SLF) equate to a minor change, this especially when you factor in the other things I mentioned like pushing the arrival post midnight. It was also customer services who made it quite clear I had no options and nothing could be done apart from pay to change or stick with it and take the little ones out of school for the day. This is for the end of May half term so we have been given plenty of notice. We have now changed to different days at a cost albeit still cheaper than the winking smiley group overall so Jet2 still get my custom.
Apologies I made an assumption it was a slot thing, it looks likely that this was down to the Airbus' coming in to the fleet and moving things around to accommodate but in all honesty I have no idea.