In reply to Dax H:
> I too have never met a competent one, they usually come under the if you can't do teach category.
This observation, while sound, does invite two questions. Firstly, if you've never met a good one then there's probably a gap in the market. Secondly, the OP lumped general business adviser together with providing accounting advice, for which there is huge demand, legally mandated, and where the OP already has a recognised qualification.
My advice, echoed by others, would be to go at it 100%. You'll never build a successful business as a side project to your existing job and you'll be breaching your employment contract to even ponder your side project during normal working hours and thereby potentially setting yourself up for dismissal.
The warning I would issue however is that possession of a valued skill does not a successful business make. Above all you need customers. Without a clearly defined and deliverable marketing strategy you are doomed to failure.
If you feel confident however, then do it. I went from well-paid and cosseted employee to entrepreneur in 1995. Despite going without income or even a car for the ensuing 18 months, I can honestly say there was not a single moment during that challenging period nor over the ensuing 20-odd years that I have questioned that decision. It was not taken lightly however at the time.
Post edited at 08:18