The answer is simply that you have to use "Google Keyword tool" or this Keyword Tool. Search for your keywords with UK as the local region AND search for [exact match]. Then you will at least know how many UK searches you get per month for each keyword. Play with alternatives to get higher local searches. I am sure you know to then compare the results against your competition, and by searching with your keyword in quotes and with the inchor: tag, etc. If you don't know, let's go into more detail.
since you are targetting customers in one particular location,i.e north london, you may try parallel methods for attracting traffic to your website, such as registering your site in local business directories, creating or joining a discussion group on your subject in social networking sites such as Facebook, Linkedin, etc, and posting your site's link along with your messages. sending your site's link by e-mail to maximum people in and around your area will also help.
Link Wheel This is the one of the most efficient method to build quality back links through a Link wheel. It is the easiest ways to get free backlinks that are permanent, easy to create and niche-specific. Link wheel Definition:-A link wheel is the newest SEO backlinks building method that involves creating multiple blog posts on multiple different sites and interlinking them in a wheel. You create the content; you create the site, giving you complete control of the niche of the site (no more blog comments on unrelated blogs). Anything that happens off your site is known as offsite SEO, and since links are coming from another site to your site, a link wheel is an offsite technique. So how does a link wheel differ from any other link, and what's the "wheel" part of the name? Link wheels are one of the most advanced SEO link building techniques out
keyword researching is the foremost part of SEO. when the Web is so densely populated with sites, it is next to impossible to achieve constant top ratings for a one-word search string. Achieving constant top ratings for two-word or three-word search strings is a more realistic goal.
try to analysis of keyword on your competitors website....do some linkbuilding like attach the new features like google search option on your website, dictionary option, calculator, facebook,tweeter etc. it may help your visitors to recommend ur website to others also.
I completely agree with all the comments that specify on content. Your content should contain information in details and specific related to your main objective behind making the website.
Keep working...............agree with update web page content. I would also like to suggest you that put a catchy and perfect description on ranking page's meta description area it's also a very effective place to attract visitor.
Dear , keyword analysis is the key part in seo ,and also do offpage regularly for increasing backlinks.....
Keyword research is very analytical process where you select those keywords which suits to you website theme and as well check competition and number of visitors on particular keyword.