Well if you really believe that Torque tonight, then sadly you're very very blinkered.
I have many friends at FR based all over the empire, and I know of only one....ONE.... That pays ANY form of tax, and he's a UK skipper that's been with FR for the best part of a decade. All the others have been more than open about not paying any form of tax since joining FR.
What's gone on is a joke and if FR really are asking for proof of tax compliance they aren't doing a very good job are they!
I even heard the FR Frankfurt crew room was raided not so long ago by the German authorities because of precisely this issue! That came from an FR F/O who happens to be a very good mate (just before you question my info).
The VAST majority of FR plots have taken the piss out of the EU tax system for faaaar too long so personally, I welcome anything Ryanair and the tax authorities will now do to ensure tax compliance.