Beware the Reverend Meeson Coolaid Drinkers on here! Totally deluded!
Plan on 3-4 months on 50% salary, maybe more with the folk leaving. Over 100 pilots leaving in 8 months is not down to basing, that's "internal spin "Take Me There" utter rubbish - ask more questions and try to find a few opinions of working for this company.
With regards its financial state, the turnover is a massive amount of money through the company, the profit compared to it, is embarrassingly small! The bank balance reserves is only £200m, forward holiday bookings and ABTA insurance! No great cash reserves!
The business model got them started over 10 years ago, cargo-thinking - old aircraft, minimum hours! It's now completely trapped in a corner with no money for new airframes and still a seasonal flying program! Ask most of the non-Coolaid drinkers with a background of good employers, most if not all, will confirm it simply can't continue! I would suggest will probably be sold at some point, it's far too temporary with little infrastructure!
Think carefully, to be at home is great - to work for Jet2 is not! It's the worst of everything you will ever encounter in the UK aviation market...over 100 pilots have left.....!!!!!
Good luck!