From HM Treasury themselves:
The Government will introduce a special scheme, which allows business
aviation operators who elect into the scheme to estimate their average passenger numbers for the purposes of APD. This will minimise administration and compliance burdens. The Government will discuss the design of the scheme with industry
As I posted earlier, no scheme has yet been published so I will await the details in due course.
There has also been no clear direction as to seat pitch in Business jets and no ruling yet on which APD would apply to each and every type of jet and interior setup.
So APD for us is not as cut and dry just yet. We can all probably make a rough estimate as to what charges apply to us, but until the final details are published, including the compliance protocol with the "estimation" scheme I will abstain from making wild guesses that can not be verified by published sources....
If anyone here has received any official communication regarding the estimation scheme and the seat pitch issue, I would like to hear from you.