I have made sure that I am here for at least 6 months a year
So you have a tax liability for the interest in your savings accounts. You need to get that sorted before applying for anything.
For the while I. Am in Poland i also regularly return to the UK and continue paying UK taxes on my UK company....
If you're here for more than 6 months a year, the UK company will be deemed to be effectively controlled from Poland and thus will fall under Polish taxation regardless of the physical residence of the company.
You need to get advice from a tax specialist as to your exact situation and potential liabilities at this point. 5 years of unpaid tax and possible ZUS liabilities in Poland could be eyewatering, and they will certainly question your sources of income if you claim to have been here for 5 years living off savings. The tax office is consulted as part of every application for permanent residency, and in this specific case, you're going to set off alarm bells.
By the way, they have access to the UK databases, and it will be easy for them to query with HMRC as to whether you've been paying tax in the UK while claiming to be resident in PL.