...as to how criminal it was...

TT35, RS718 - Staged undercarriage collapse. Later torched in filming...
TT35, RS715 - Used for cockpit shots and hacked up where necessary to allow filming. Wings used as crash fodder in other scenes...
TT35, TJ118 - As RS715, but cockpit survives at DH Heritage Centre at London Colney...
TT35, TA734 - Taxied into fuel bowser at speed for film scene. Crashed and torched in one go!
TT35, TA642 - Genuine undercarriage collapse during filming. Could have been RS718s saviour if it'd happened earlier in production and been filmed!
Amazingly 6 other Mossies survived!

In "Mosquito Sqn", no Mossie's were harmed during filming. Amazing!