Thanks Vertisol
Unfortunately these stats do not show the 'real' numbers.
in the case of MEL for May 2015 the figures show 45,616 psgrs MEL-DXB and 8,977 psgrs MEL-LHR.
The 8,877 MEL-LHR passengers travelled on QF9 MEL-LHR
The 45,616 MEL-DXB passengers travelled on either QF9 or EK. Some of the EK passengers went on to LHR using a different flight number so they are not in the stats.
Likewise nothing shown for PER-LHR as there are no nonstop or direct flights.