Completely agree with some of whats being said here, tapping into the local market is fundamental and generally much easier to become an authority and build trust through word of mouth too!
To be honest I don't believe incorporating a limited company is essential at all, as long as customer service remains consistent then this shouldn't make a difference to your clients, after all its only a status thing (and more paperwork) unless you need to be protected from being personally liable.. but for now being a sole trader will do me fine.
Also, do any of you think it would be worth me printing out some business cards and posting around on ad boards around the city? Or would this just be a waste of time/money... any thoughts on this would be appreciated