Biz jets have the same difficult to breach glass ceiling as TP, so not a way into airlines (if that's what you want).
Jet2 will ask for payment for the type rating. And probably employ you as a contractor, possibly pay you 70% salary, possibly even base you in Spain. Sound much better deal that a cadet deal at Easy / Ryanair?
No one from Eastern or Loganair went to Jet2 in the last 12 months, and I can't think of any other UK airlines who took TP pilots last year. So who were these shadowy "other operators" taking 3 or 4 a year?
So the 50 throughput in the last 12 months that you claim to have observed went to biz jets?
BS!