Why Manchester? What is it that you like about it?
Which ones have you visited and liked? It amazing how different Unis can feel, some are just right and other not so much - and its very personal
And don't underestimate how much the module choices can vary, which ones do you really like the look of?
And then there are placements, assuming you are going to Uni to kick start a career, 1 year of work experience will make a massive difference to your employability (and likely improve your final year grades). Which Unis are best placed to get good placement years?
I studied at Manchester (and work there sometimes) its an amazing city with the campus right in the thick of things, it feels a bit like a London based Uni only better
When I was helping my eldest pick her Unis she had 5 quite different choices - a stretch, a target, a safety net and 2x wild card choices