Theres lots of free advertising places, via the net.
This Forum, Twitter and FaceBook. (i know your on all 3, its exactly what i would do too)
Take pictures/videos of your good work, like i do and systematically spam it, like i do... free advertising.
What about a work/business plan??
How big do you really wanna get? You can use that ethic to plan your yard for say 3-4 lorries to be loaded at a time, so on.
You can also use that to work out what direction you want your Firm to go too, ie: Railway, Site, Street, House-bashing, etc.
Website is a MUST.
Only employ ticketed Scaffolders = multiple uses... site work, industrial, street work.
Only employ ticketed Scaffolders who can drive lorrys - again, they are versatile and can do anything.
Honestly, im the first to dig out Bosses... not because im a priick (maybe i am, just a bit), i just HATE getting treated like shiit by them, but having your own Firm could be a blessing and a nightmare rolled into one.
I suppose, if it was that easy, we'd all be doing it.