Hey there :-) Congrats on your offers! If the courses are quite similar then I would suggest thinking about things like hospitals/research facilities. Also think about the uni locations, acommdatinon, price of living, how much you'll have to travel, how big the unis are, how diverse the students bodies are etc. On a personal note, I can't speak for UEA, but for what it's worth, I have several friends at HYMS who really like it there!
Best of luck,
Alex, 4th year UCL medic
6med