Law / English man marrying Polish woman in church - no marriage certificate? [4]

I am booked to get married with my fiancé in Poland , everything with church is done .
We are living and working in england together and will be returning for work after our wedding to live in england a few years more ,

My fiancé says that in a polish church wedding we get No marriage certificate , and that nobody in Poland gets any papers to prove they are married and we do not get to keep the original marriage certificate ?

I cannot believe this is true if so how do I prove in england that she is my wife and how do I get these papers ?

Thank you for any help :)