NarrowBandFtw
Honorary Master
Was there any significant opposition to joining the EEC at the time...?
As far as my google-fu can uncover, yes, there has always been significant opposition to joining the EEC, remaining in the EEC, joining / remaining the EU. Seems to be one of the oldest debates in modern British culture:
https://www.theguardian.com/politics/2016/jun/25/a-timeline-of-britains-eu-membership-in-guardian-reporting