Change default Google search engine to .co.uk from standard.com
My first language is English but I live in France where, for some reason my Google search engine defaults to dot com. This means that I see results from France (good) and bucket-loads from the rest of the world which have no relevance to where I am or what I'm looking for.
I've been through the 'add more search engines' help pages and there is no answer there that I can find. I want to set my default not as google.com (as Google says I have to because I chose the English language) but google.co.uk. So, how do I do this in Firefox please?
Thanks in advance Kevin