I'm happy to hear that the Gieza name is found in the UK!
About a relation...it all depends on where your Gieza family came from in Poland.
The Gieza family that I am researching comes from a small village that is today located in Ukraine. The village is Czeremosznia (Cheremoshnia in transliterated Ukrainian).
Does this sound familiar?
Of course, I have found the Gieza name from different areas of Poland during my research.