Oli
From what i've seen Jet 2 doing well with on time perf. Yes with only 1 aircraft your vulnerable but TC had the delay as previous and Thom had a big delay last week, Baby fairly regular delays.
You also have to appreciate that low co's including cov man's beloved Ryanair cancel at the drop of the hat, i.e. who cancelled when the puddle jumper got stuck on the runway last week?. Makes their OTP stats look fantastic...