Attlee was PM at the time when ESCC was formed - and declined to take part in it - although this was Churchill's view too.
It should be pointed out that nearly every senior British politician was sceptical about these European initiatives. The exception was Macmillan who, apparently, considered...
It's a bit misleading to say that he didn't want the UK to be part of the United States of Europe. He did indeed say that there should be a closer European Union, in a speech in 1930, and that the Britain shouldn't be part of it "We are with Europe but not in it," but he didn't stop there.
In...
You're mixing up the European Court of Justice with the European Court of Human Rights. The UK wasn't one of the signatories of the ECJ as it was for EEC members only (it was set up in 1952 BTW).
The ECHR was set up in 1959 so Churchill wasn't one of the signatories for that either but he was...