I think you will struggle.
I came from Poland in 1995 when I was a 13 year old lad & there were a fair number of Polish ex-servicemen still alive in UK. I knew ex-army doctors, tank drivers etc. One of the reasons they stayed was literally out of fear.
Back in Poland, ever since I was a kid I have NEVER heard or seen of an old veteran that has fought in the West during the war. The only ones I heard of that returned in late 40's were quickly found to be "spies" and "traitors" before being promptly tortured, executed etc.
By contrast try looking for WWII Polish Yak-3 pilots - you might have more luck
