Figures for CDA compliance from the performance stats for Heathrow's 50 busiest airlines in Oct-Dec 2025:
18 out of 50 airlines: >90% compliance (Green)
27 out of 50 airlines: 70-90% compliance (Amber)
5 out of 50 airlines: <70% compliance (Red)
Best performer for CDAs was Aegean Airlines, bottom placed (of the 50) was Air France.
No stats available for the other 30-40 airlines using LHR.