International Criminal Court Act, the CAA and the Munitions Flights
It is clear that
a) The munitions being flown to Israel are being used against civilian targets and in contravention of Article 8.2 of the Statute of the International Criminal Court.
b) Actions ancilliary to such war crimes are in contravention of Section 52 of the UK International Criminal Court Act 2001.
c) Allowing flights to pass through UK airspace is arguably part of (as in ancillary to) such acts.
I have made this point to the Civil Aviation Authority. It does appear from a reading of the statutes that anyone assisting those flights is subject to prosecution under the 2001 Act.