SEO by area
 

I am just curious. If have .co.uk domain is there a difference between backlinks value from .com, .net, etc domains ? I mean .co.uk is United Kingdom market so maybe if I have business in UK it gives more value than .com or .net sites

Yes. If you have a domain for example .in it will already be beneficial for that particular area . As far as getting backlinks is concerned. backlinks from a area domain will increase the value of your site in that particular area as most of the traffic of the site is from that area.