Fuel: Conc vs 737
For those who wanted to know what the difference in fuel burn between a 737 and Concorde LHR-MAN........I don't know! (Never had the pleasure of flying the 737).
My best guess - at least 200% more. Probably higher.
A comparison:
Typical Concorde taxying fuel burn: 6500kgs/hr
Typical 777-200 cruising fuel burn: 6500kgs/hr
Of course, as we've already discussed earlier, the magic thing about Concorde was that once you'd got to Mach2 its efficiency was outrageously good - better miles per gallon than a 747. An option not available, however, between LHR and MAN.
Edited to add: a slow taxy out at LHR would almost definitely consume more fuel than the 737 would burn for the sector.