I recently flew from DUB-SGN (via SIN) with SQ. The flight operated from AMS and I was under the impression that SQ routed most of their Irish passengers through AMS. However you can now book directly from DUB on the SQ website and the flights are operated via LHR with BMI (though the website says EI and BD are their flight partners and passengers from Ireland can route through LHR, MAN, AMS, CDG, FRA).
My question is. Have SQ moved their Irish passengers off the AMS route due to this being overfull with passengers originating in AMS? Or is is due to them trying to get increased bookings on the LHR routes with the A380 due to start in the near future?