Well Ralph, they certainly didn't operate a "BAM" policy during my ten years there! Ask any of the ex QF pilots who came to fly for them, they thought it was a generous fuel policy. I never had a single 'please explain' letter despite carrying more than FP fuel when I thought it appropriate, the secret was to be sure and give an explanation in the VR, not just load it on.
Woftam - SQ contingency fuel was 5% of burn or 5000kgs, whichever was less, on top of this they would carry diversion fuel, alternate holding fuel, taxi fuel etc.