Bit of a delayed reaction here, but isnt the MYT G-GTDK rather than C-? It appears to be re-registered...
Correct. MYT and SSV lease aircraft off one another very often. Depending on the lease contract, ACIM or Wet, the aircraft will either retain its canadian registraion for ACIM lease but will have to be placed on the british register if it is on wet lease.
BAL operate a weekly 763 to LEPA, not as heavy fuel wise of course, but does it go fully laden pax/baggage wise?
Generally it goes out with a full pax load with probably 300 pieces of luggage.
BAL send a B762 yearly to TBPB and that gets out of EGGD fine, so surely long haul flights would be possible..?
These were before my time in the UK but from what I have read/heard the aircraft either made a tech stop en-route or departed with a very reduced load.