I work with a global branding consultancy, Ogilvy & Mather (www.ogilvy.co.uk
). My main focus used to be branding, design and illustration. I now focus more on rebranding and revitalising brands, but manage the projects rather than get hands on with the nitty gritty parts of it. I've been doing this for about 4 years now and love it with all my heart.
We're based at the Canary Wharf in London, UK, and as with most jobs in London, it pays exceptionally well. Rough idea of what we earn, it spans from [£55,000 GBP /~$105,000 USD] (starter entry level package) to well over [£450,000 GBP /~$850,000 USD]. Ordinarily you'd be privy to bonuses, normal pay rises (varies in percentage, but ranges from 9-20% depending on your position and progress), private pensions, private healthcare, gym membership, and if you travel, a company car with fuel expenses/insurance/congestion charges, etc paid for.
Realistically you'll earn an annual income of at least [£70,000 GBP /~$130,000 USD] from the moment you've proved yourself capable after an initial 6 month assessment period. It's a competitive field to get into, but the fruits of the journey are there and very clear to see.
Edit: I also have Mudsplat Studios which is more a past time rather than hardline business ventures, but still, even with that, we already have clients including John Lewis and Waitrose amongst a few. I try stimulate myself with handling those accounts as and when I can. Mudsplat Studios focuses on artwork and print (anything on paper, canvases, wood, doors, boards, list goes on...).