The "Blue/Yellow" KLM Uk/Buzz split as it is so called, is a little bit complicated!
If I understand correctly KLM Uk aircraft (Fokker 50/100 and ATR) are transferring to the Dutch register and will operate under KLM's AOC as part of KLM Cityhooper, but KLM Uk as an airline has been renamed KLC Uk (KLM Cityhooper UK).
Buzz (BAE 146 and 737-300), which has now split from what is now KLC Uk, formerly KLM Uk, which Buzz was part off, will continue to operate under KLM Uk's AOC (formerly Air UK's AOC), but the airline associated with KLM Uk's AOC is now called Buzz, if you follow.
Please correct me if I am wrong anyone.
Agree - there is not a more complicated way off having orchestrated it (in my humble opinion!).