Google Local seems to be pretty finicky.  I can honestly say I haven't really figured out an exact reason for how they rank things.  I have found that the more interactivity there is a on the G+ page the more likely it will show up.  And not just posts by you, but also interactivity by other people on your page.

In addition make sure you filled out as much applicable information in your Google Local Profile as possible.  That always seems to make a difference.

It doesn't appear to me that google has picked up o the latest changes you've put thru.  When I search for Pixel Primate the title tag I get is completely different from what is currently listed on the page:

In Google: Web Design for Leicester, London and UK | Pixel Primate

Whats in the Code: Web Design Leicester & London | Website design by Pixel Primate

Beyond just that it does appear that it's a pretty competitive search space, so some time and effort will most likely be needed to get any real first page results.

Good Luck!

Hey Larry,  You should be able to put the URL directly into the browser and see the file: http://www.example.com/robots.txt