If the RAF work with the RAAF in Wedgetail software based spiral upgrades, and more specifically learn from the RAAF the methodology and culture regarding how the upgrades are envisaged, planned, acquisition procedures (very different) etc., they may find that they are on to a real winner. The acquisition bureaucrats at the MOD won't be impressed, but they aren't the ones at the sharp end. Boeing have after initial resistance, finally accepted this Wedgetail spiral upgrade development system and the beauty about it is that it is operator driven and by operator I mean the operators on the aircraft themselves, not some engineer and / or bureaucrat back in Canberra.