SamKnows is showing the OP exchange will be 21CN (WBC) early next year:-
"21CN WBC status: RFS date set : 31/03/2010"
That will then open up the number of 24meg operators whos use the BT adsl2+ service. Till then he's stuck with either 8meg or a providor at his exchange that has LLU and offers 16 or 24 meg. Only Sky and bulldog currently offer that and bulldog is a tiscali company!