When I click on post link, goes to page with none of images

Hello

I think i have integrated wordpress blog into homepage at https://www.marble-design.co.uk

I need to style it loads, but just trying to get basic structure working at mo. I have put test blog in to illustrate what happens.

When I click on a post it opens a page without any images showing (except ones specified in css style sheet, i.e. none of ones in html markup are showing). The thing is when I edit header.php etc in dreamweaver the images are working and showing. I have edited header, index, single etc, but something seems to be linking incorrectly.

Any ideas as to what I have done wrong!

thank you in advance