Just noticed that Orange broadband haven't passed on the rate change. Phoned them and they confirmed that they're still charging the old VAT rate and haven't decided what they're doing about it yet. They tried to fob me off with several excuses such as:
We don't charge VAT. They later changed their minds.
We have a special arrangement with the government to change it when we feel like it.
The notice only applies to mobile broadband (when it's on the home broadband page).
I told them that they can't charge the old VAT rate anymore, I can understand if they'd put their prices up (although not sure they can do that without my confirmation in a contract period) but I spoke to 2 managers who confirmed that they're still charging the old rate.
Reported to trading standards who agreed with me that they're breaking the law.
If you're on Orange broadband then give them some stick!