some recent posts mentioned the Royal Navy, so (I know it's my re-post):
for example
"The most serious threat to Britain’s security posed by Scottish independence would be the enforced removal of the Trident nuclear missile submarines from their base at Faslane. Space for the submarines could probably be found at Devonport but since the 1960s there has been a great deal of money invested in construction at Faslane which cannot be simply packed up and taken to Plymouth. Such an upheaval also threatens the 6,700 Royal Navy and civilian workers at Faslane. Even if a suitable, secure, deep water base could be found in England or Wales, replicating the specialist Coulport missile handling facility would also require vast expense. The Trident submarine replacement program is already at the very limits of what the defence budget can bear and, the costs of relocating facilites in the event of independence could well put an end to the UK nuclear deterrent on financial grounds. The loss of Faslane would also require the seven Astute class attack submarines to be re-located to Devonport, together with attendant costs."