Hi Sam, 

Have you had a chance to look at the user guide for GA ? 
http://webhelp.episerver.com/addons/googleanalytics/#GoogleAnalytics/Developers_GoogleAnalytics.htm%3FTocPath%3D_____4

Hope it helps. 

Hi Shahid,

Thanks for getting back to me. No I hadn't seen that guide, does it relate to both CMS6R2 and 7? In any case the domain wasn't altered in either my local or our test environment so I wrote my own method and which did a find and replace:

        public static void GenerateEpiGoogleAnalytics(this PageBase page, HttpContext context)
        {

            string existingDomain = UriSupport.SiteUrl.Host.ToString();
            string gaDomain = SiteSettings.GlobalHomePage.GoogleAnalyticsDomain;

            ScriptBuilder scriptBuilder = new ScriptBuilder();
            if (!scriptBuilder.ShouldAppendScript((HttpContextBase)new HttpContextWrapper(context)))
                return;
            bool requiresScriptReference;
            string str = scriptBuilder.BuildTrackingScript(out requiresScriptReference, (HttpContextBase)new HttpContextWrapper(context), page.CurrentPage);

            str = str.Replace(existingDomain, gaDomain);
            page.Page.ClientScript.RegisterStartupScript(typeof(ScriptAppender), "CustomEpiGoogleAnalytics", str, true);
            if (requiresScriptReference)
            {
                string webResourceUrl = page.Page.ClientScript.GetWebResourceUrl(typeof(ScriptAppender), "EPiServer.GoogleAnalytics.Scripts.Tracking.js");
                page.Page.ClientScript.RegisterClientScriptInclude("EpiGat", webResourceUrl);
            }

        }