Hi, Did a History degree a long time ago, then applied on the milk round (graduate recruiting round) for usual management training schemes, big companies like Procter &Gamble, Lever Brothers, M&S, Banks, Accountancy firms etc. etc. all run management training schemes for new graduates. Found a good History degree made me very marketable, and ended up in marketing, speaking from the other end of my career I think it gives you lots of transferrable skills, the ability to analyse, identify issues, develop hypotheses, a good understanding of modern society, writing skills etc. There is a slight shift to recruiting to specialisms within marketing from vocational degrees but the ability to see the bigger picture, not necessarily learnt on a vocational degree, is going to be a skill that will become more and more important at higher levels of management. You can do specialist postgrads, important that they either lead or give exemption from the Institute of Marketing and / or Market Research Society qualifications. I actually did an MBA five years into my career, sponsored by my employer, which gave me the full haul.
Those coming out of my MBA seeking a career change all got into good careers in banking, marketing etc. and have gone on to be successful (One of the top 10 MBAs in the UK and top 30 in the world though)
Now I too am back at uni, using my History in a postgrad
though helped by my marketing skills paying extremely well in terms of doing odd days facilitating senior management planning away days etc. Have to say working in marketing was much easier to juggle with childcare responsibilities than my academic institution 
Important if you do decide to go the management route to think through your PA experience which is bound also to have given you transferrable skills / experience.