Should I stay in my home city, or take a leap to a new one? Need impartial advice!!?

You don't say how old you are so I am guessing you are pretty young. I have moved many times in my career and there are very few exceptions that it was the right thing to do. If your career is important to you, your willingness to relocate gives you the appearance that you are willing to take new challenges - which is important to move forward in your career. You will make new friends and still keep the ones you have in Nottingham. Go for it!