It appears to confirm that Thomson were pushed. That being the case, it would seem certain that the one-off charters, Jersey and Balkan will follow suit.
I don't get why Jersey would necessarily go. It uses the same size aircraft as KLM, and the airport will be open on Saturdays for KLM anyway. And technically it's a scheduled service
You might need some extra staff to service a B737 (compared to a Fokker 70), but surely not for a Dash 8 or EMB-175?