Earlier quoted context omitted.
This is unfortunately not true. Great Britian declared war on Germany, but provided none support to Poland. This was also the case during the Warsaw Uprising. After the war has ended Poland has been sold by under the Russian occupacion. The polish fighter squadrons that took part in the battle of britain were not even allowed to join the wining parade. They were sent home to what was now considered an enemy state. Th…
Keep in mind that no-one but the Germans were aware that blitzkreig would be as fast as it was. Up until that point, war was a somewhat leisurely affair - this is the exact reason why France fell so ignomiously. War was declared, now we can start shifting things into place while the Poles hold the Germans and... holy shit, the Poles have collapsed in only five weeks. Same thing happened to the French - the German arm…
Yeah, that's a great excuse. That should be written in the anglo-polish military alliance:
"in the event of any action which clearly threatened Polish independence, and which the Polish Government accordingly considered it vital to resist with their national forces, His Majesty's Government would feel themselves bound at once to lend the Polish Government all support in their power... Unless of course the germans use tanks and move very quickly. In that case, sorry".
The UK did not ally itself with Poland to help them from being taken over. It was a way of saying to Hitler, that he can't just do what he wants in Europe (like anecting Czechoslovakia) without the Germans and French approving it. The war was immenent, and everybody seemd to know that except for Chamberlain. This was only an act of self interest on behalf of the UK, and hey, who could blame them for that?
What you can't reasonably argue though, is that they tried to really help Poland in the beginning of WW2, and that they didn't betray them at the end in Yalta. And the occupation by the Soviets really wasn't much better than by the Nazis.
There was no real plan to take the Soviets on, because the Allies had no real stake in it.