Largely immaterial,
lessons learned, I suggest, amount to this -
1) Do not give a British company a contract that isn't more watertight than a duck's ar$e
3) Don't let a civil servant oversee it, unless they have shown (via smaller contracts enroute) that they can actually run a contract without swapping a good dinner every three months for several million of taxpayers' cash.
8) Don't, for Christ's sake, let any senior officers near the trough, as they would sell Granny for a job in defence on retirement, and will happily sign anything as long as they get a non-executive directorship down the line.
14) Consider (in due course, in the fullness of time, when the moment is apposite, etc etc - insert 'Sir Humphrey speak' here as required') allowing somebody from the armed forces who knows what is needed to provide oversight - non technical advice, where somebody with an ounce of brains says 'we don't need that' and 'we do need this'... just by way of advice, like.
Naaah, it'll never happen, thank **** I'm old and won't have to see the final result of 'civilisation' on this moron inhabited planet....
Dave
(Paragraphs numbered iaw contract numbering regulations, dept of dead on accountancy, HMG).