An important point though is that our interests converged with the UK on issues where otherwise we did not have many other in our camp, or no one with the heft of the UK.This is a bit of a myth.
- For almost the whole time Ireland was a net beneficiary and the UK a net contributor to the EU budget
- On tax Ireland's position has always been closest to places like the Netherlands and the UK
- The UK disliked farm subsidies, Ireland loved them
- On EU defence Ireland was always a laggard
- Ireland was an enthusiastic euro member from the start, the UK never was and was never going to be
For sure having similar product markets as well as legal and education systems meant that the UK and Ireland were making the same points, but the convergence of interests were overstated.
On farm subsidies, euro, there was France and others.