pressman, amongst others, is under the very mistaken impression that Brookfield contract pilots are not liable for tax. Believe me and the others who have posted here and elsewhere, you are liable for tax in the country where you derive the majority of your income, no matter what your nationality or domicile happens to be.
Brookfield, along with other contracting companies in the EU, have already been investigated and individuals who are on their books will be required to pay tax in the not too distant future. It is only a matter of time before ALL contractors in the EU will be paying the tax due to the Revenue at the appropriate rate. Not only that, unpaid tax on previous income up to seven years will also be collected. Individuals could also be liable to penalty payments decided by the Revenue, without recourse to appeal, if payments are not made on time.
Keep your head in the sand if you feel lucky, otherwise I would recommend talking to an accountant, soon.