Thanks for the suggestions, I couldn’t see how I could set different menus for each page in the menu in the menus area but I did find a plugin called Custom Page Menus which so far seems to do the job well.
Thanks Chip and Apljdi!
I think you need to check your settings – are you sure you have set the page called home as your home page on wordpress? Go into Settings > reading > front page displays > select the page you have called “home”, then select the “blog” page for posts.
Hope this helps