Working in a CPW centre, and having been watching developments unfold, it's not so much that they've blocked access to the website, it's more the process by which they've followed to end up blocking it.
Basically, they've lied to us, the staff, to Bill Ray at el Reg, and to the Union.
We'll be damned if we can get anything in writing out of them, and we'll be damned if we can get any real assurances that the issues the Union is highlighting on the website in question are completely out of kilter with reality, and that we really are going to work our contracted hours without being forced to finish later/start earlier/sleep on bunks in the basement, get paid for doing our jobs properly, not get penalised for stupid things like trying to HELP PEOPLE WHO CALL US, etc.
No matter what you might think from your one or two phonecalls to Jamil in India, there are good people in CPW/TalkTalk/Opal who WANT to help you, who get their BUZZ from fixing your issues, and these people are being driven out.
Rather than deal with these issues, CPW have essentially stuck their fingers in their ears and are screaming LALALALALAL I CAN'T HEAR YOU at the top of their voices. Perhaps that's why people are frustrated enough to keep coming back to the issue? Perhaps, as CPW clearly don't respect their employees or any Union, this is why we come to El Reg, in the hope that we may embarass the PR-hungry pratts into treating us more like human beings.
If you really want, take the Famous Carphone Warehouse Five Fundamentals (you can google them), make each statement negative, and replace the word "customer" with "employee".