This is all getting a bit scewed.
Essentially what we know is a safety concern was raised by a non EU country. Various sovereign nations have taken the decision to pause its AZ roll out until it can be investigated.
What it has to do with the EU - I don’t know, they haven’t banned it. The EMA are going to investigate it and offer advice, which is the responsible thing to do.
I don’t see what any of the above has to do with the UK Vs EU to be honest, just a load of governments risk assessing and coming up with different decisions and approaches.
Not sure it’s good news for anyone this.