Ask to see the Briefing Note from DFT dated 8 Nov 2011 which refers to "The Future of Flight Crew Licensing and Military Accreditation - Update & Current Issues".
The proposed revised accreditation criteria should be with the CAA by the end of Jan 2012 (so the note states) - I suspect that they will be published in CAP 804 when it is released in the spring.
The present QSP scheme and its successor will not be compatible; there will be no ‘mix and match’ between the 2 schemes and any advantages conferred by the QSP scheme must have resulted in licence issue by 7 Apr 12. Beyond that date the successor scheme only will apply, with the exception that advantages conferred by JAR licences already issued (such as ‘frozen’ ATPL credits) will remain. If a JAR licence with IR has not been obtained by 8 Apr 12, any credits for examinations will depend upon the terms of the new accreditation scheme.