This is only happening in IE7.
I’m new to CSS so I’m not aware of what are common occurences or not in regards to browser compatability.
I’m guessing it has something to do with floats and that I put a clear on my footer perhaps?
I don’t have IE7 running at the moment, but I suspect it’s being caused by the height setting on the wrapper, which shouldn’t be there anyhow.
Remove height: 185px from #wrapper and see it that fixes it. 
Ah I bet that’s it, I’m at work atm, so we’ll see when I get home. Thanks for the suggestion