Thanks for the reply, but I'm still unclear what I code should be using. You mention that the 'old' method no longer works, does that apply to Word pre-2007?

I have read the post you link to and concluded that I should try
The outcome was just blank; no image included, but also no error.

I also noticed in the post that you mention adding a macro, however I am unable to do this due to application restrictions. I'm not clear wether the macro is neccesary for the images to work.

I'm starting to think it is a quirk of the application running the merge.