Market research

General information for the business: sales coaching
Industry: Education
Geographical areas: UK
Data to include: Market size, SWOTs,
Extra notes: Hi,
I would like some market research on people (self employed or an employee) or business owners of "micro businesses"
(1-10 employees) who have been on sales training courses or are participating in developing themselves through self study.
Is there data which can be collected on this to give me an understanding of a target size in the UK for a business I will be starting soon?
This will be the first of a number of projects i need conducted and as I have little time due to my fulltime job and I need help with it!
Other areas I would like to understand are:
-Do micro businesses (1-10 employees) struggle with generating new revenue's and/or capitalising on exisiting customers/clients?
-Do these Micro businesses and/or the self employed feel confident in their sales ability?

I can provide more details if your able to help.
Look forward to hearing back from you
Thanks
Nick