u/Desmond-Wigwam

I am currently considering obtaining Confirmation of Citizenship (through my Polish Grandfather who arrived in the UK after serving under Anders in WW2).

Before I start paying someone to look for Grandfather's family records in Poland and Lithiuania (he was born in Wilno), I have concerns that his stated occupation in the UK "Lengthman, British Railways" (basically a track repairman) may fall foul of the 'serving in a foreign public office before 1951' rule. His occupation is detailed on both his marriage certificate (1950) and my mother's birth certificate (1952).

What are the chances my application would be rejected on this basis?