The JAA CPL syllabus has been agreed by the UK CAA and the associated examinations are available. However, no training providers are currently providing the course. There are two reasons for this - firstly, the only provider that holds an approval has ceased trading and, secondly, no other provider has sought approval.
The CAA can hardly force training providers to apply for approval for a course for which they see an inadequate market.
It is not necessary to take all of the CPL examinations to qualify for the IR, the 7 subjects required are listed in JAR-FCL 1.470(c). Individual member states are not at liberty to vary this requirement.
Were you to choose to take the theoretical knowledge examinations in another JAA member state (e.g. France) you would also have to take the flight test in that state. JAR-FCL does not allow training for a single licence or rating to be split between different states.
I'm not quite sure what lobbying the CAA is intended to achieve, they have put everything in place - it is the training industry that is dragging its heels.