The general consensus is that Poles who fought under Allied Command were not invited to take part in the VE parade of 1945.
Among the terminally ignorant that may be the general consensus. However, amongst those who can read sources such as Hansard, media reports from the time, books by the likes of Norman Davies and the autobiography of General Anders it is known that sets of Poles were invited to take part.
Michael Moszynski ..
Moszynski is a publicity seeking prat and a liar. He secured nothing from the PM, all he got was a letter from a secretary. And he didn't get any apology, he got an expression of regret. And it wasn't an expression of regret that Poles were not invited, it was an expression of regret that Poles did not participate. Sadly the secretary was too polite to express regret that Poles did not participate despite being invited.
dozens of historical documents
Dozens of historical documents? You haven't even provided one.
Here's a link to Hansard, do let me know if you need any help with it:
hansard.millbanksystems.com/commons/1946/jun/05/foreign-affairs#column_2117