Of the three you name, Nottingham is the best. As noted here many times, the name of your university is not usually a factor in obtaining a job, but the quality of your education is. Broadly, the more competitive a university's entrance standards, the higher the chance of obtaining a good education there. Also, resources matter. Bigger universities have more and better staff and large libraries, and offer a better student experience (more sports, bars, societies etc).
Good luck!