Welcome to the Q&A Forum

Hey Steve, As Ryan mentioned the keyword meta tag is no longer used for ranking purposes. Here's a great Google Webmaster Post and video with Mat Cutts that covers this topic. As for your keywords I would stick to 2 or 3 per page so that the page is targeted and tightly themed. If you try to optimize your pages for too many keywords the content will likely start to become diluted and less valuable from a search engines perspective. To answer your second question more directly it would be ideal to have individual pages that target a single keyword, however I would only recommend this if you have quality content to support each of the keywords. Otherwise, your pages will have a difficult time ranking. Something to note is that a few of your keywords are multi-purpose. In other words, if you optimize one of your pages for "digital aerials stockport" you will naturally be optimizing for "aerials stockport" as this keyword is contained within "digital aerials stockport." Just something to think about If you're looking for some tips on keyword research check out this section of the SEOmoz Beginners Guide to SEO. Hopefully this helps - good luck!