In most cases I would say no, but seeing as you didn't do A levels and went to leeds met, I recon a masters would put you on level footing with undergrads applying for entry level positions. I feel it would be worth you looking at Cambridge's MPhil in innovation, organisation and strategy, LSE's MSc in management and Warwick's MSc in marketing and strategy as they appear to be the best business Msc degrees. It could be worth calling admissions to check your eligability and where students go to after graduating, i.e what percentage go into consultancy or finance/marketing of blue chips.