The "government level" as you put it had already been taken care of; why do you think the Ministry of Supply was funding ICI's mustard plant construction? The only "government level" approval required at this point is the Minister of Defence's, for it's a military decision, to do with the conduct of the war; then it devolved onto Brooke for operational decisions.Governmental level and yes, it would have been ABs role to order its use as he saw fit ..
Unprofessional in that they weren't stopped at an earlier stage and cost x-amount of time, energy and money. Lowdell's idea is just one example; crossong over to Fletcher and British tank production in the early war period for a FAR more expensive folly...Thorough and professional. Thorough in that madcap ideas were allowed to be designed, developed and tested, professional in that they were soon dismissed.
...in relation to TOG1 and TOG2. Then we have the many aircraft companies that were designing and prototyping "interim" fighter types in the summer of 1940, along with the money spent on strange aberrations like the slip-wing Hurricane and the Hilson Fighter!...both of them monuments to a disgraceful waste of money and effort at a time when Britain could ill-afford either"
What we were doing in the summer of 1940 in MANY areas of defence spending in relation to the threat of invasion smacks of desperation, not professionalism; to all these, add the already-discussed-elsewhere subject of the Ministry of Works abandoning any cost or quality constraints on the civvie contractors building the country's invasion defences, Augustus Agar's abortive but expensive "fire ship" plan, the very expensive (and underachieving) "burning seas" plan...and Winston's own ridiculous "Cultivator No.6" idea