I am currently studying an MSc in Management at Derby Uni, I have been here for 4 years. I did my HND in Business and management then topped it up to a degree in business management and now I am doing my masters in Management! I don't feel there is a huge difference between business and management and business management. What I would do is go to the uni open days and query it for yourself, that way you get a better idea and you can speak to current students who are there and also the teachers.
I have covered a wide range of modules from HR, Finance, Economics, Accounting, Marketing Services etc....they have all been relevant, so it really depends on what the uni's have on offer in terms of modules and to see if they are interesting to you.
The link below are Derby's open days:
The Business courses that Derby do:
You can click on them to see what modules they have to offer.
Hope this helps :) X