Hi Thandeka
I think the fact you're considering this so carefully, weighing up the risks, assessing the marketplace etc, means you'd make a very good freelancer/consultant-type person.
I go along with what Missingtheaction said about it taking a while to stop worrying that every job is your last - and I'd add that this comes with the territory, in the same way as the wash of annoyance that accompanies the tired commute to work comes with being a full-time employee.
I'm not a consultant because I've got a baby (although I'm just about to have one) - I, like you, left a good, secure job with pension etc because I wanted some more flexibility in how I worked (although for different reasons than you).
And as LemonTart says, it was the best decision I ever made. The positives (in the spiritual sense): whether you work from home, at a client's office or a mix, you are your own boss. And there is a satisfying challenge (I find) in making it all work successfully (ie finding the projects you want at the price you want).
On the practicals: accounts, tax and all the rest of it - you hire an accountant, of course! Nothing terrifying about that, really - although you should take a bit of time to find one you like, who explains things in a way you understand. You factor in what you pay them to your profit and loss for the year. It takes a bit of time to understand the mechanics of running a small business, which is what you would be, but that's as nothing compared to identifying a market need and generating sales (and it sounds like your most of the way there on this).
Being a consultant and having a baby: I'll personally be better placed to offer views on this once I've had it obviously (come on baby, where are you? ), but you may be heartened to hear that in the last 9 months:
*no-one has tried to sack me for being pregnant (even though I work on a daily rate so they could have got rid of me in an instant if they'd wanted)
*several other customers offered me work, knowing I was pregnant
*customers have been asking when I will be back from maternity leave
And there's no question I'm going onto any 'mummy tracks' - the only track you're on being a consultant is your own!
Once pregnant:
*your brain doesn't turn to mush ... unless you want it to (so there's no impact on your intellectual output).
*you're not obliged to walk around in front of your clients stroking your bump and talking about fairy cakes (you can leave that to the full-time employees who plan to take the full year's maternity leave)
*your customers may well be flexible with their demands of you in the later (more uncomfortable) stages of pregnancy, if you are based in their offices and supposed to work core hours - the bottom line is, if you're good and they need you, as long as you communicate with them and deliver the outputs they mostly won't care whether you arrive at their premises at 0900 or 1100.
Maternity leave:
*I will say, rather controversially, that I was a bit suprised to read on another thread in this topic that someone had not contacted their customers for nine months whilst they were off and wondered why, when they got back in touch, there wasn't any work (was it the credit crunch, they asked). I think the answer is that people are SE/freelance/run small businesses/contract at different levels and for different reasons - some people just want to earn an amount a month, working only on Tuesdays, their first priority being their family etc. But this is not me and sounds like it may not be you
*if you're going to be a successful consultant/businessperson you will want to make some decisions in advance (as much as you can) about how long a maternity leave you take, how to keep in touch with your customers whilst you're off, and how and when to return (eg can you do one project 'part-time' for a while, instead of two 'full-time' etc, or will you take, say, 6 months out and then go back full-time - depends what your assessment of your customer needs are). The key is to appear professional and considered to your customers.
*childcare - when I'm ready to return to work I am expecting to be able to tell my customers what my childcare arrangements are, as part of my sales strategy (ie I don't want people having second thoughts about contracting me because they think I'm suddenly going to become unreliable/start missing deadlines etc)
*SMP/paying for maternity leave etc - there are other threads on here about this. Suffice to say you'll undoubtedly be eligible for the standard £100 a week from the state and you'll want to consider putting some money aside (unless you have a rich DH) in advance to help pay the bills when you're off/the first couple of months nursery fees etc
Hope all this helps you make your decision!
MrsBaldwin