I want research on freelance agencies within the automotive industry

I'd like to find out, in the first instance, information about resource agencies providing contract staff into the Automotive engineering, development and manufacturing sectors within the UK. Examples would be - Jonathan Lee, Matchtech, Jam Recruitment, Contechs. I would like to understand the following information:

1. How many are based in the UK
2. Other than automotive, what other industries they support
3. Their annual turnover
4. How long established
5. How many contractors live
6. Where they advertise for positions (websites)
7. Who their customers are
8. Contact details for Business Development