Re the references to JetA1 in the report....
Would this be because the fuel loaded in Heathrow was Jet A1 and flight crews are told, where there are combinations of fuel types in tanks, to enter the freeze temperature of the fuel type with the highest freeze point into the FMC/CDU?
If they entered -47, then the aircraft would have warned them at -44 (3 degree buffer)....well above the freeze point of the remaining fuel.
I notice the word satisfactorily is used in several places in the report. What margin of error does "satis" allow?
