Law / Working in Poland while being self employed in the UK and paying tax and in there [24]

Hi
Next year I intend to star a small business (renting a summer houses by the polish sea - summer business only) . Me and my wife (both polish but with british citizenship) would like to know what form of business would be best for us. We both working and living in England for several years. Due to the fact that we work in England, I would not want to pay ZUS in Poland. I have heard I could obtain some form from the UK Tax office ,which I could use to avoid paying it in Poland? But maybe it would be better to rent for a mother-in-law who is retired? -you never know in Poland : ) I am open to all options.

I don't want to start a limited company in UK, the houses are paid off, I would prefer not to transfer ownership to the company. My wife works as a self employed ,it seems to me that this would help to avoid a higher tax in Poland wher after: 17100£ you pay 32% in Poland and in UK its only 20% to 50k £

I know that I will have to declare rental income from Poland in the UK, that is not a problem but if I will have to declare my income from UK in Poland it could push me to pay higher tax in Poland...

The problem is that it is not so easy to find an accountant who know how to operate between these 2 countries regarding to SELF EMPLOYED . There are many companies that will help set up limited companies but we are not interested

Maybe someone has some experience that they could share?

Thanks.