MKG
I would be sorry to see these fine buildings lost to large hotel chains but Dartmouth and Cranwell ARE just old buildings. Greenwich was special and that is being looked after by budgets other than Defence. TLBs simply cannot afford to continue to haemorrhage money for non core activities. I am as proud of our architectural heritage as the next man, but let Golden Brown pay for their upkeep.
BRNC and Cranwell may have a social cachet for foreign officer cadets but some of our greatest aviators and sailors learnt their trade living in accommodation hulks and nissen huts (not to mention under hedges). we cannot match the first class Military Universities enjoyed by some of our NATO allies. Unless we are prepared to invest in reaching that sort of standard, then we must make our training the best for our own people, using whatever establishments we need to.
Listed buildings are an incubus. Spend the money on more training places at sea and more training flying hours.