MEL/CAAMMEL/TGL26 insomnia
 

The UK's CAA produce perfectly clear MMEL documentation identifying differences in UK requirements against, say, Boeing DDG or FAA MMEL. UK Operators incorporate the additional requirements of the CAA's MMEL and the Regulators approve (or otherwise) the Operator's own MEL.
I am confused by the purpose of the JAA's TGL26 which appears (via rather a broad brush) to accomplish the same task as the CAA's own MMEL which, for a G registered aeroplane, takes precedence over the content of TGL26.
Therefore, is TGL26 a redundant document if the CAA has produced an MMEL supplement for the type? Any help appreciated.