Hi
I am not an accountant, but a marketing consultant but my thoughts:
I would ask yourself what your current professional network is like...a lot of work comes from recommendation - are you going to be able to turn people you know into future clients?
I would also think about securing a part-time role which will mean some secured income. I also think it can give a favourable impression of being busy too! I have been freelancing since the start of the year and a number of people I have met at networking etc are doing similar.
This type of website offers a few finance jobs, lots based in London which is helpful, if you are in London but not if you aren't! www.womenlikeus.org.uk/parttimejobs/parttimejobsboard.aspx
I found this book helpful - www.amazon.co.uk/Starting-Your-Own-Independent-Consultant/dp/0273731173/ref=sr_1_1?ie=UTF8&qid=1314564281&sr=8-1
There is nothing stopping you knocking up some cheap business cards (Good Print, Vistaprint, Moo) and attending a networking event and seeing how it feels. There are SO many networking clubs/events out there, just google networking and your location.
There are also websites where you can bid for work. www.peopleperhour.com or elance.com. Clients place jobs, you bid. Price is unfortunately the key, but sometimes a job worth bidding for comes along. I would also try to tailor your response. I have placed work on their and it is amazing to see what cut and paste rubbish people put on there!!
You only pay once you secure a client and some work, so you could put yourself on there sooner than later. It is a way to build up testimonials/experience of consulting.
Good luck.
WS