While the idea of gratitude toward Britain as an ally in WW2 certainly does exist in Poland it is difficult to understand why.
Britain did nothing to help Poland that I am aware of during the war, and after the war shamefully abandoned the country to Stalin. It also returned thousands of Polish servicemen to the tender mercies of the post war regeime, http://www.ihr.org/jhr/v1/v1n4p371_lutton.html if you are interested.
Poland on the other hand made a huge contribution to the British war effort. While the popular British stereotype is to mock the Polish cavalry charging the German panzers, the contribution of Polish airmen to the RAF is often over looked. In fact the most experienced pilots and the most successful squadrons in the Battle of Britain were Polish.
The vandalism against the Polish cultural centre in Hammersmith was one of the most shameful (although obviously relatively minor) episodes in recent British history.
