Just wondering if this is another example of where the exchange may be upgraded, but existing broadband users are not automatically upgraded to the ADSL2+ higher speeds, until the supplier transfers them which means in Orange's case until BTw (their supplier) gets around to it, which can be up to 12 months later. It might be earlier, but it is not in Orange's control.
Other Providers operate differently for their existing customers, though generally not those who (like Orange) brand the BTw "white label service" under their own name. All new or transferred connections at your exchange should now be provisioned on 21CN or LLU depending on the Provider.
Orange are not in breach of contract so this is not a case in which you can expect to be allowed to leave without additional cost if you are in the minimum term of your contract.
Edited by deleted (Fri 06-Jan-12 00:53:16)