Jet engine development = promising
Jet engines + Air Ministry bureaucracy = not so promising
Jet engines + Air Ministry bureaucracy + flaky inventor + irregular financing + conflicting plans + personal rivalries + Winston sticking his oar in = the sort of administrative trainwreck best illustrated with a jet engine and some rather rickety wagons.
Sometime soon, the Air Ministry (and others) are going to have to make serious priority decisions between "stuff we can have now", "stuff we want next year" and "stuff that would be really cool in five years' time if we're all alive to see it." Judging by current performance, it will go down fighting to the last - with itself. But fighting none the less!