BT OpenWorld do now scan e-mails for Viruses and Spam.
I've just signed up for the new free scheme.
The snag is that it works on your incoming e-mail in the Web mail stage. So if you want to check on what goes into your Spam Folder, you must go to the Web Mail address to check it. Just like Hotmail. You can't check it using OE.
It's seems to be part of the BT campaign to offload some of their Server Based e-mails. Similarly, when I recently decided to go Broadband, they were very persuasive about the new "BT.Com/broadband" which, at first sight to the uninitiated, seems the logical step to take. Not so. if you have BTInternet/BTOpenworld e-mail addressees.
If you go BT.Com/broadband, you have to pay BTOpenworld (or some other ISP) to keep your e-mail addresses.