Hi Richard I remember this happening before on a previous update but unfortunately I can't remember how I solved it.
I have selected two sidebars and a central page on the theme properties but it doesn't appear to affect the Home page.
Here is the link http://www.wordpresstest.thecapitalpartnership.co.uk/
You will see how the Home page should look by looking at the other pages using the links in the green navigation bar. The original Home page looked just like the rest. The green navigation bar shouldn't be on any of the pages as the links are contained in the sidebars. I think I got round that by creating a menu with nothing in it but not sure how I then replaced the green one with it?
Sorry if this is a bit jumbled but I'm replying ony iPhone and my old thick fingers sometimes don't hit the letters I want them to!!!
Thanks again for your help