every EU MS has its own similar body, in Ireland it is the HPRA.
The MHRA have the vaccine on “rolling review” (temporary) approval, as any EU27 can do, it means that they don’t have all the results of the trials and they are still reviewing it. The MHRA have granded “rolling review” approval under the EU legislation that they operate (until the end of the month) under.
EMA is being more cautious and reviewing all the data.
The head of the UK regulator who approved the Pfizer vaccine said its progress was “totally dependent” on the “rolling review” approach it took.
www.google.ie
Neither approach means it is dangerous (let’s hope it isn’t) or not effective (let’s hope it is)