I'm not sure about the events that you're referring to. The Treaty of Riga was in 1921, the Anglo-Soviet Trade Agreement was signed in 1921 as well, the USSR was only declared in 1922, and the UK recognized it in 1924, the same year in which Lenin died. In fact, related to the Trade Agreement he complained:
> The British government has handed us its draft, we have given our counterdraft, but it is still obvious that the British government is dragging its feet over the agreement because the reactionary war party is still hard at work there
So, I don't think it's fair to assume that it was only the UK who wanted normalized relations, and that the difficulties came from only one side.
> taking Eastern Europe sealed the deal
Which again, seems out of place, since I presume you're referring to events that followed the start of WW2.
Talking about WW2, Europe wasn't friendly to the USSR leading up to war:
The initial anti-comintern treaty in 1935 was extended to the United Kingdom, Italy, Poland and China (ruled by Generalissimo Chiang Kai-shek).
In 1939, Stalin offered to Britain and France to deploy a million troops against Nazi Germany, but he had been rebuffed:
https://www.telegraph.co.uk/news/worldnews/europe/russia/322...
and of course, Churchill's Operation Unthinkable means that Britan had a deep, deep distrust of the USSR.
Despite all this, the USSR asked to join NATO in 1954, but again: it had been rebuffed, along its proposals of reunification and neutrality for Germany.
We often forget about all this, and only think of the reasons for why we distrusted the USSR, but we ignore all of the opportunities that we missed for a friendlier relationship.