I've searched the forum and seen lots of threads about this and i have attempted to find any http:// references hard coded and i cannot find any. I checked all my template files etc and even looked with the developers tool kit searching for http:// without much luck.
I do have a facebook sidebox but i have turned this off and i still get the warnings.
In IE it seems to be ok, i have the padlock and it says the site is trusted.
I have used CTRL + SHIFT + J in chrome to show unsecure items and at first it was the facebook sidebox (hence why i turned this off) and now it finds nothing.

If someone could have a quick look to see if i've missed anything i would be grateful.

The link is www.purpleandblackalternative.co.uk/store/