Sorry you've not had any responses about this. Are you sure you’ve posted in the right place? Posting in the specific Study Help forum should help get responses.
I'm going to quote in Puddles the Monkey now so she can move your thread to the right place if it's needed.
I'm planning on getting a maths degree from Queen Mary, What will my chances be in getting into IB with a maths degree from a Russel group uni?
That is probably the only way you will get into investment banking
On a more serious note, I am sure you will be put in excellent stead for any job if you are applying from any russell group university (except perhaps academia).