Help! Simple question about text width.

[Pete]

I know this is going to be the easiest thing in the world to fix but I can't
find out how to anywhere, honest, I looked.

an example page
http://www.ctc-productions.co.uk/ctc-productionsourclients.htm

Can someone explain why the text in the main body doesn't stretch across the
whole of the cell. It used to line up so it was the same width as the 2
picture strips half way down the page, then I fiddled with something and it
no longer lines up.

Thanks for any help anyone can give.

(The fiddling was making the text justified, it looked wrong, I put it back
to default)

Peter